Redundant Sine Wave Power Inverter

GR300 Series 100V Model
User’s Manual

Ver.1.01E

Table of Contents
1. Safety Instructions ....................................................................................................3
2. General Information ..................................................................................................4
3. Features.........................................................................................................................5
3-1 Specification ..................................................................................................................................... 5
3-2 De-rating Curve................................................................................................................................. 6
3-3 Dimension ......................................................................................................................................... 7
3-4 Control Panel .................................................................................................................................... 7

4. Installation and Wiring..............................................................................................8
4-1 Installation Guide ............................................................................................................................. 8
4-2 Wiring (Single) .................................................................................................................................. 9
4-3 Wiring (Parallel) ...............................................................................................................................11
4-4 Checking the Current Setting ....................................................................................................... 14
4-5 How to Start Up (single)................................................................................................................. 14
4-6 How to Start Up (Parallel) .............................................................................................................. 15
4-7 How to Power Off (Single) ............................................................................................................. 16
4-8 How to Power Off (Parallel) ........................................................................................................... 16

5. Functions .................................................................................................................... 17
5-1 Change Settings ............................................................................................................................. 17
5-2 The Indicators of Setting during Operation................................................................................. 17
5-3 Operation Mode .............................................................................................................................. 18
5-4 Output Frequency .......................................................................................................................... 18
5-5 Output Voltage ................................................................................................................................ 18
5-6 Buzzer ON/OFF ............................................................................................................................... 18
5-7 LED Brightness............................................................................................................................... 18
5-8 Sleep Mode...................................................................................................................................... 19
5-9 Protections ...................................................................................................................................... 19
5-10 Remote Connector ....................................................................................................................... 22
5-11 Optional Terminal ......................................................................................................................... 22

6. LED Indicators ........................................................................................................... 23
6-1 The LED Indicator in Normal Status............................................................................................. 23
6-2 LED Indicators when Protection Activates .................................................................................. 24

7. Troubleshooting Guide ........................................................................................... 25

DIASINE® Redundant Sine Wave Power Inverter GR300 Series 100V Model User’s Manual©2017-2023 DENRYO CO., LTD. All Rights Reserved. No part of this document may be reproduced in any
form without the prior written consent of DENRYO CO., LTD.
2

1. Safety Instructions
This document contains important safety and operating information for DIASINE®. To get the most out of
DIASINE®, use DIASINE® only as described in the safety instructions. Read the safety instructions carefully
before installing DIASINE®.

WARNING

This sign indicates that the following contents includes important
information. The wrong order of handling may result in death or serious
injury.

CAUTION

This sign indicates that the following contents includes important
information. The wrong order of handling may cause damage to the
products and the surrounding items.

MEMO

This sign indicates that the following contents includes important
information of manuals on functions that contain safety instructions orproper operation of DIASINE®.

Installation Precautions
・ Installation and operation of DIASINE® should be performed by personnel knowledgeable aboutproper safety precautions.
・ To avoid the risk of electric shock and fire, read and follow the electrical wiring regulations. Do notdisassemble DIASINE®.
・ To avoid the risk of electric shock and fire, install DIASINE® out of the reach of children.
・ Do not expose DIASINE® to rain, snow, dust or under high humidity environment.
・ Do not install DIASINE® under high temperature environment, near fire or under direct sun exposure.
・ The temperature of DIASINE® may rise during operation. Be careful when moving or removing it.
・ To avoid covering or obstructing the ventilation openings, do not put any objects within 15cm (5.9in)area near DIASINE®.
・ To avoid overheating, do not put anything on top of it.
・ To connect more than one battery, use the same model of battery from the same manufacturer. Using
different batteries at the same time is dangerous.
・ Batteries produce explosive gases when discharged. Do not smoke or light fire near the battery.
・ DIASINE® contains components that may cause arcs or sparks. To prevent fire or explosion, do notinstall in compartments with batteries or flammable materials.

CAUTIONDo NotDisassemble

Keep Dry

Since battery deteriorates over time, maintenance on a yearly basis is
recommended. Change deteriorated batteries to prevent the hazard offire.

Danger
No Open FlameHigh Temperature

3

Do Not Stack

Keep
Air Ventilation

2. General Information
DIASINE® GR series is a pure sine wave inverter that converts DC voltage to AC sine wave voltage andcan connect up to 6 units in parallel. The output can be expanded up to 300VA x 6 units = 1800VA. Becauseof DENRYO’s original synchronous control technology (patented), parallel output can be achieved bysimply connecting the output terminals. Since the protection circuit works for each unit, even if one unit
fails during operation, the output can continue. The output waveform is the same as the sine wave ofcommercial power supply. Total harmonic distortion is less than 3%. High efficiency circuit and switching
control achieve 88-89% efficiency at full rated load. DIASINE® is downsized presented by fanless structure,
cooling by natural convection, which enables it to operate quietly. In addition, DIASINE® is equipped withvarious protections. Even if the input polarity is reversed, the internal circuit will not be damaged. Moreover,with the capability of inputting wide voltage range, operating under wide temperature range and remotecontrol function, DIASINE® can be used in various environments and applications.
Features・ Up to 6 units can be connected in parallel・ Synchronous control by simply connecting the output terminals
・ Input reverse polarity protection by internal circuit・ Fanless quiet operation (natural convection)
・ Wide operating temperature range (-20 to +60°C）
・ Output voltage/frequency easily switchable by button
・ Pure sine wave output (total harmonic distortion less than 3%)
・ Light weight and slim design
・ High efficiency 88-89% (at full rated load)
・ Built-in remote-control function
・ Various protections: Input voltage warning, shut down, input reverse polarity,
output voltage, output short-circuit, overload and over temperature・ Buzzer ON/OFF, LED brightness switchable
・ Sleep mode
・ Wide input voltage range
・ Input voltage of 12V/24V/48V by 3 lineups
・ Input terminal cover for dust prevention
・ Optional communication function (T. B. D.)
Block Diagram
DC
Input

DC/DC

DC/AC

FilterSafety and EMC Certified
Safety standards:EN62368-1: 2014+A11:2017
Immunity standards:EN55024:2010
Emission standards:EN55032:2012

4

ParallelControl
CircuitAC
Output3. Features
3-1 Specification

Input

Output

MODEL
Battery Voltage
Voltage Range*1
Max. Current
No-load Current*2(AC Outputting)No-load Current*2(AC Output disable)
Standby Mode
Consumption*2
Sleep Mode
Consumption*2
Efficiency at Rated Load
Rated Power
Peak Power (3min.)Surge Power (3sec.)
AC Voltage (switchable)
Frequency (switchable)
Waveform
Voltage Tolerance
LED indicators

FunctionProtection

Remote-control
Option terminal
Input
OutputOthersOperating Temperature(Refer to P.6)

Environment

Operating Humidity
Storage Temperature/
Humidity
Vibration
Safety Standards
Withstand Voltage

Safety &EMC

OthersIsolation Resistance
EMC Immunity
EMC Emission
Dimension (L×W×H)
WeightGR300NA-112
12V
10.5-19.5Vdc
33A

GR300NA-124
24V
21-39Vdc
16A

GR300NA-148
48V
42-78Vdc
8A

0.6A

0.2A

0.1A

0.3A

0.1A

<0.1A

8mA

7mA

4mA

1mA

3mA

2mA

88%
89%
89%
300VA
360VA (Refer to P.6)
420VA
100 default, 110/115/120Vac
50±0.1Hz default, 50/60Hz
Sine Wave, <3%THD±3.0%
Operating status, Battery voltage level, Output power level,
Protection function, Operation setting
Output remote ON/OFF control terminal

Six-position four-conductor (6P4C) modular jack
Undervoltage, Overvoltage, Input reverse polarity
Overload, Short-circuit, Output voltage error
Over temperature (Detect by internal temperature sensors)-20 to +30°C at rated-20 to +45°C at rated load, +60°C at 80%
load, +60°C at 60%
load
load
20-90%RH non-condensing-30 to +70°C, 10-95%RH
10-500Hz, 3G 10min./ 1cycle, 60mins. XYZ axes
Certified EN62368-1: 2014+A11:2017
Battery I/P-AC O/P: 3.0kVac
AC O/P-Ground: 1.5kVac
Battery I/P-Ground:1.5kVac
Battery I/P-AC O/P: >1000MΩ/500Vdc/25°C/70% RH
AC O/P-Ground: >1000MΩ/500Vdc/25°C/70% RH
Battery I/P-Ground: >1000MΩ/500Vdc/25°C/70% RH
EN55024:2010
EN55032:2012
234.0×146.5×44.0mm (9.213×5.768×1.732in)
0.9kg

All parameters NOT specially mentioned are measured at 112:12Vdc, 124:24Vdc, 148:48Vdc input, 300VA rated load, power
factor=1.0, 25°C of ambient temperature and under the default setting.
*1 Tolerance of voltage: 112: ±0.5V, 124: ±1V and 148: ±2V.
*2 Average.

53-2 De-rating Curve
・ GR300NA-112

・ GR300NA-124/148

Depending on the environment, the over load protection or the over temperature protection may operate
even in the range of the derating curve. For high rated power, please install DIASINE® in an environment
with as good ventilation as possible.

63-3 Dimension

3-4 Control Panel1○

AC Outlet

2○

AC Output Terminal

3○

Setting Button

4○Power LED

5○

Battery LED

6○

Load LED

7○

Power Button

8○

Remote Connector

9○

Optional Terminal

10○

Grounding Terminal

11○

Reversed Connection Warning LED

12○

Battery Input (-)

13○

Terminal Cover

14○

Battery Input (+)

7

4. Installation and Wiring
4-1 Installation Guide
Recommended Installation Location
Install DIASINE® on a flat surface or rack with sufficient strength. Avoid mounting and using in a dusty or
high temperature environment. For ventilation, do not mount anything within 15cm (6in) area near the
DIASINE®.

Do not place any
objects on the top

More than
15cm

More than
15cm

Figure 4.1 The Example of Installation
Recommended Installation Method
There are 8 mounting holes, Φ3.4mm (0.134in), and depth 6.5mm (0.256in), in the bottom of DIASINE®
(Refer to P.7) which can be used when installing DIASINE®. The recommended screw length is
6mm(0.236in). It is recommended to install DIASINE® horizontally on a flat surface.

WARNING

Risk of Electric Shock and Damage
Screws longer than the depth of the mounting holes may damage theinternal circuit board and cause electric shock or malfunction.

CAUTION panel of the DIASINE during or immediately after use.

To avoid the risk of burns, do not touch anything other than the front®

Table 4.1 Recommended Wiring Size
Terminal
Battery Input
Grounding
AC Output
Remote Connector

Cable Size

Length

AWG8

≤1.5m

(10mm2)(59in)

AWG10(6mm2)
VVF1.6
AWG28-20(0.08-0.5mm2)≤3m(118in)-8

Screw Size
M4
M5

Terminal

Tightening

Width

Torque9mm(0.354in)
14mm(0.551in)

1.5Nm
2.0Nm

-

-

-

-

-

-

4-2 Wiring (Single)
Battery Wiring
Remove the terminal cover on rear side of the DIASINE®. Slide and push the terminal cover toward
DIASINE® bottom to move it. Wire to the battery input terminal. Mount fuse in positive side cable. Refer toTable 4.2 to select fuse size based on system. Use the appropriate wire size for the battery input terminal.
The screw size of the battery input terminal is M4; the width of the terminal is 9mm (0.354in).
Recommended cable size at full rated load is 8AWG (10mm2) for GR300; recommended torque for
installation is 1.5 N·m. Too thin a cable may cause overheating and fire. Recommended length of battery
cable should be as short as possible within 1.5m (59in). After connecting to the battery, check that thePower LED on the front of the DIASINE® lights orange. If the power LED does not light up, check thebattery voltage. In addition, the reversed connection warning LED near the ground terminal on the back of
DIASINE® will light red if the polarity is reversed. Please correct the polarity and check if the warning LED
turns off.
Table 4.2 Recommended Fuse SizeWARNING

Model

Current

GR300NA-112

Under 40A

GR300NA-124

Under 20A

GR300NA-148

Under 10A

Explosion Hazard
It is very dangerous to short-circuit the battery. Always wire the input
terminal of the DIASINE® before connecting the battery.

Grounding Connections
Wire the grounding terminal in the rear of the DIASINE® to the system. The screw size of the grounding
terminal is M5; the width is 14mm (0.551in). Use solderless terminals, such as R5.5-5, and fasten it with ascrew. Recommended cable size is 10AWG (6mm2) and torque is 2.0 N·m.
Load Wiring
Connect the load from the AC outlet or AC output terminal in the front of the DIASINE®. Select a cable withthe appropriate voltage rating for the AC output terminal. VVF1.6 cable is recommended. Peel off
approximately 13-15mm (0.5-0.6in) of the cable jacket. Insert the cable into the hole marked AC OUTPUT
on the front panel until the stripped portion is completely inserted. Make sure the line (L) and neutral (N)are not shorted. When removing the cable, insert a flathead screwdriver into the oval hole above theinsertion hole and pull the cable out while pressing the flathead screwdriver.

CAUTION

Terminal damage.
The terminal may be damaged if the flat-blade screwdriver is pressed
obliquely and forcefully.

WARNING

Shock Hazard
Make sure the core wire is fully inserted and not exposed. Make sure
DIASINE® is not output when wiring the AC terminal.
9Be careful NOT to short-circuit line (L) and neutral (L). Be sure to wire L and N correctly when wiring boththe outlet and AC terminals of the DIASINE®.
Precautions About Load
Most loads can work on AC power supplied by DIASINE® GR series. However, some loads may not work
even when keeping supplying with 300VA.
(1) An extremely large current, about 6-10 times the rated power of the load, is required to start inductive
loads or motors. DIASINE® cannot handle loads with peak current above the specification. Check thepeak current required by the loads before selecting an inverter.
(2) When connecting a capacitive load or a rectifier such as a switching power supply, do not activate theload and start DIASINE® at the same time to ensure complete startup of DIASINE®. Alternatively, start
DIASINE® with a smaller load and then increase the load. If more than two loads are connected,
activate one load at a time after DIASINE® starts outputting.
Remote Connector Wiring
Using the remote connector function in the rear of the DIASINE® (Refer to P.22), DIASINE® GR series canbe started up or be turned to standby mode without pressing the power button. The recommended cablesize for the remote connector is 20-28AWG (0.08-0.5mm2).
Optional Terminal Wiring
Optional terminal in the rear of the DIASINE® use a six-position four-conductor (6P4C) modular connector
to adapt to various applications. Check DENRYO Official Website for more details.

To circulate air, do not install any otherequipment in this area.

Figure 4.2 System Wiring Diagram10

4-3 Wiring (Parallel)
Input Parallel Connections

WARNING

Parallel connection is for GR series only. DO NOT connect in parallelwith GD series or commercial power. In addition, the GR series
CANNOT make a single-phase 3-wire or 3-phase system. Be sure to
make parallel connections according to the procedure described in thissection.

Remove the terminal cover on rear side of the DIASINE® GR series. Slide and push the terminal cover
toward GR series bottom to move it. Wire all GR series battery input terminals. Use terminal blocks tocollect all positive cables and negative cables to each block. Use the appropriate wire size for the battery
input terminal. The screw size of the battery input terminal is M4; the width of the terminal is 9mm (0.354in).
Recommended cable size at full rated load is 8AWG (10mm2) for GR300; recommended torque for
installation is 1.5 N·m. Too thin a cable may cause overheating and fire.
Ground each grounding terminal if necessary. Refer to Table 4.2 to select fuse size based on system.
Mount fuses in each positive cable between the battery input terminal and the terminal block. If necessary,also mount fuse between battery terminal and terminal block.

MEMO

Battery input cables should be as short as possible and the same length
between each GR series and the terminal block.

WARNING

Explosion Hazard
Check that each positive and negative cable terminal block is wired
correctly before connecting to the battery. It is dangerous the positive
and the negative terminals are touched when wiring battery.

CAUTION

The output current of the GR series may be unbalanced and output lessthan the rated power if the battery input cable length of each GR series
is very different or the input voltage of each GR series is different.

After connecting to the battery, check that the power LED on the front of the GR series lights orange. If thepower LED does not light up, check the battery voltage. In addition, the reversed connection warning LED
near the ground terminal on the back of GR series will light red if the polarity is reversed. Please correct
the polarity and check if the warning LED turns off.

CAUTION

It is recommended to connect all GR series to one battery array whenconnecting in parallel. Each GR series output may be unbalanced andoutput less than rated power when used in combination with different
battery arrays or different input voltage models.

11

Figure 4.3 Input Parallel Connections
The recommended battery input cable length is less than 1.5m (59in). It is not necessary to make thepositive and negative cables the same length, but as shown in Table 4.3 below, adjust the cable length sothat the total cable length of both the positive and negative cables is the same for each GR series.
Table 4.3 The Example of Battery Input Cables Length for 3 Units GR in Parallel
Parallel Unit

Positive Cable Length

Negative Cable Length

Total Cable Length

GR(1)

1.5m

1m

2.5m

GR(2)

1m

1.5m

2.5m

GR(3)

1.25m

1.25m

2.5m

Output Parallel Connections
GR series can be connected in parallel up to 6 units. To connect in parallel, wire to the AC output
terminals (or outlets) line (L) and neutral (N) of each GR series. Use terminal blocks to collect the all ofline (L) cables and neutral (N) cables to each block.

MEMO

AC output cables are recommended to be within 3m and should be thesame length between each GR series and the terminal block.

CAUTION circuited.

The GR series may be damaged if the line (L) and neutral (N) are short-

WARNING DO NOT connect the GR series to commercial power.
Shock Hazard

WARNING DO NOT wire the AC output when the GR series is outputting.
Shock Hazard

12

CAUTION power if the AC output cable length of each GR series is very different.

The GR series output may be unbalanced and output less than the rated

WARNING

Shock Hazard
For safety, DO NOT touch the AC output cables (plugs, exposed wires
or terminal blocks, etc.) when even one of the GR series connected inparallel is in operation.

Load Wiring
Connect the load’s line (L) and neutral (N) to the coupled line (L) and neutral (N) cables.

Figure 4.4 Output Parallel Connections

Figure 4.5 System Wiring Diagram (Parallel)

134-4 Checking the Current Setting
The default settings of the DIASINE® GR series are output voltage 100Vac, output frequency 50Hz, output
disable mode, buzzer ON, and LED bright. Press setting button on the front panel to change settings (Refer
to P.17). Settings are retained even if battery power is exhausted. In parallel operation, GR series cannot
start if the output voltage and frequency setting are different. Make sure that all parallel units have thesame setting.

4-5 How to Start Up (single)
Output Disable Mode
Press and hold the power button for 1 second. After the start-up sound, the power LED blinks green (blinks
blue if start up by remote connector). This mode is output disable mode. In this mode, press the setting
button and the power button simultaneously. The start-up sound sounds again, all LEDs light up, and output
starts.

When the first power button is pressed and the output does not start for 10 minutes in this mode, the GR
series will automatically return to standby mode.
Single Output Mode
Press and hold the power button for 1 second. After the start-up sound, the power LED blinks green for a
few seconds. The start-up sound sounds again, all LEDs light up and start output automatically. The
difference between single output mode and output disable mode is that in single output mode, the output
will start automatically only by pressing the power button once.

144-6 How to Start Up (Parallel)
Make sure that all parallel units have the same output voltage and frequency setting.

CAUTION For safety, please use the output disable mode for parallel operation.
First Unit

Second Unit

Press each GR series power button for about 1 second in any order. After the start-up sound, the power
LED blinks green (blinks blue if start up by remote connector). This mode is output disable mode. In thismode, GR series do not output but detecting the parallel units each other. Check that all parallel units areunder the output disable mode.
Press only ONE of GR series setting button and power button simultaneously.
The start-up sound sounds again, all LEDs light up and start output.

CAUTION same time. GR series may be damaged due to out of synchronization.

DO NOT press 2 units or more setting buttons and power buttons at the

All parallel GR series also light up all LEDs and start output automatically.
The GR series which the buttons were pressed start output, other parallel GR series detect its output andthen automatically start output and operate in parallel.

When using the single output mode for parallel operation, after pressing the power button of each GR
series for about 1 second, all GR series will start outputting. Check the LED indicators to make sure thatno protection circuit is operating(Refer to P.24), and then turn on the load.
15

4-7 How to Power Off (Single)
Press and hold the power button for 1 second. GR series will stop the output and switch to standby mode.

4-8 How to Power Off (Parallel)

CAUTION

Stop all loads connected to the GR series before turning off the GR
series. The GR Series may be damaged if the power is turned off whileloads are in operation.

After stopping the loads, press and hold the power button of each parallel GR series in any order.

After the power button is pressed, the GR series will stop output and return to standby mode.

When all parallel GR series stop and return to standby mode, the power off procedure is completed.

CAUTION

If the load is powered on when parallel GR series are starting up, thefirst GR series may become overloaded and may not operate normallyin parallel.

16

5. Functions
5-1 Change Settings
1. After connected to the battery, DIASINE® is switched to standby mode. The power LED lights orange
and other LEDs are off in standby mode. Do not connect anything to AC outlet and AC output terminal.
2. Pressing the setting button in standby mode will display the current setting for about 3 seconds. Tochange the setting, long press (for about 2 seconds) the setting button. The buzzer* sounds, and only
the power LED lights. Release the setting button and proceed to the next step.
*DIASINE® does not sound once buzzer is set OFF.
3. Refer to Table 5.1, press the setting button to select the color of the power LED until it matches theoutput frequency and operating mode you selected. Long press the setting button. The buzzer* sounds,
and only the battery LED lights. Release the setting button and proceed to the next step.
4. Refer to Table 5.1, press the setting button to select the color of the battery LED until it matches theoutput voltage you selected. Long press the setting button. The buzzer* sounds, and only the load LED
lights. Release the setting button and proceed to the next step.
5. Refer to Table 5.1, press the setting button to select the color of the load LED until it matches buzzer
setting ON/OFF and LED brightness you selected. Long press the power to complete setting process
and back to standby mode. If long press the setting button, setting mode begins again from step 3.
6. Press the setting button. Check the setting is the same as the setting you selected.
7. The setting is saved even if the battery is removed.
OperatingDescription
Standby mode to Setting modeLong-press the setting button

Change the setting items

Press the setting button

Chose the parameterLong-press the power button

Finish and save the settings

Figure 5.1 LED and Setting Button
Table 5.1 LED Color of Settings
LED

Power LED

Battery LED

Load LED

LED ColorGreen●

50Hz, Output disable mode*

100Vac*Buzzer ON, bright LED*

Yellow●

60Hz, Output disable mode

110VacBuzzer ON, dark LED

Blue

●

50Hz, Single output mode

115VacBuzzer OFF, bright LED

Purple●60Hz, Single output mode

120VacBuzzer OFF, dark LED*Default setting

5-2 The Indicators of Setting during Operation
It is possible to check the current settings during AC outputting by pressing the setting button, refer to Table
5.1. The settings cannot be changed during operation.

17

5-3 Operation Mode
The DIASINE® GR series has 2 operation modes. Set it in combination with the output frequency.
Output Disable Mode:
GR series output is disabled at start-up until an external output voltage is detected. When the GR series
starts up by the power button, the power LED blinks green, the battery LED and load LED are off. When
the GR series starts up by remote connector, the power LED blinks blue, the battery LED and load LED
are off. When the GR series detected the external output voltage from other GR series in parallel, they
check whether the output voltage and frequency are the same. If output voltage and frequency are thesame, the GR series start outputting in sync. The power LED blinks red if out of synchronization. To start
output under this mode, press the setting button and the power button simultaneously for about 1 second.

CAUTION same time. GR series may be damaged due to out of synchronization.

DO NOT press 2 units or more setting buttons and power buttons at theSingle Output Mode:
When GR series starts up by the power button or remote connector, it starts outputting after detecting
whether there is any external output voltage from other GR series in parallel. When the GR series detected
the external output voltage from other GR series in parallel, they check whether the output voltage andfrequency are the same. If output voltage and frequency are the same, the GR series start outputting in
sync. If output voltage and frequency are different, GR series are out of synchronization and the power
LED blinks red.

CAUTION

DO NOT set 2 units or more GR series to single output mode and startup at the same time when connect in parallel. GR series may bedamaged due to out of synchronization.

5-4 Output Frequency
The output frequency can be set in combination with the operation mode.
50Hz/60Hz: The default setting is 50Hz. Set all GR series to the same output frequency when connect inparallel.

5-5 Output Voltage
The output voltage can be set.
100V/110V/115V/120V: The default setting is 100V. Set all GR series to the same output voltage whenconnect in parallel.

5-6 Buzzer ON/OFF
The buzzer on/off can be set in combination with the LED brightness.
Buzzer on/off: The default setting is buzzer on. The buzzer sounds when the button is pressed, power
on/off, warning and protections work. The warning buzzer sounds 3 beeps every 5 seconds, and sounds
5 beeps every 5 seconds when protections work. Set the buzzer off to disable all of these sounds.

5-7 LED Brightness
The LED brightness can be set in combination with the buzzer on/off.
LED bright/dark: The default setting is LED bright. The LED becomes darker when chose the LED dark.
18

5-8 Sleep Mode
DIASINE® switches to standby mode after connecting batteries; power LED lights orange and other LEDs
light off. Under standby mode, hold power button and setting button simultaneously for 3 seconds, turns
DIASINE® to sleep mode. Under sleep mode, all LEDs are off, power consumption can be suppressedmore than standby mode. DIASINE® in sleep mode, is the same as in standby mode, can be activated by
the power button or by the remote control connector. However, the settings cannot be confirmed orchanged by pressing the setting button in sleep mode. Hold the power button and setting button again for
3 seconds turns DIASINE® back to standby mode. Disconnect the battery to cancel the sleep mode.

5-9 Protections
To prevent error operation, the DIASINE® GR series is equipped with protections listed below.
Input Reverse Polarity:
Reversed connection warning LED near the grounding terminal in the rear of the DIASINE® lights red
when the battery polarity is reversed. Please reconnect to correct polarity.

Input Undervoltage:
When the battery voltage is lower than the undervoltage warning value, the buzzer beeps 3 times
consecutively around every 5 seconds. When the battery voltage is lower than the undervoltage shutoff
value, DIASINE® automatically shuts off the output, buzzer beeps 5 times consecutively around every 5
seconds and the battery LED blinks red. When the battery voltage is higher than the undervoltage recovery
value, DIASINE® automatically resumes output. The buzzer will not sound if the buzzer setting is off.

MEMO

The undervoltage protection may work under conditions such as theload consuming too much power at the time of engine start. It may cause
DIASINE® to shut off the output as the battery voltage drops.

Input Overvoltage:
When the battery voltage is higher than the overvoltage warning value, the buzzer beeps 3 times
consecutively around every 5 seconds. When the battery voltage is higher than overvoltage shutoff value,
DIASINE® automatically shuts off the output, buzzer beeps 5 times consecutively around every 5 seconds
and the battery LED lights red. When the battery voltage is lower than the overvoltage recovery value,
DIASINE® automatically resumes output. The buzzer will not sound if the buzzer setting is off.
19

CAUTION

Damage Hazard
Please choose battery within the DIASINE® input voltage range. If 12V
battery is used with 24V model, the battery voltage is lower than input
voltage range, DIASINE® will not work. Conversely, if 48V battery isused with 24V model, the battery voltage is higher than input voltage
range, DIASINE® may be damaged.

Over Temperature:
When the internal temperature is higher than the over temperature warning value, the buzzer beeps 3
times consecutively around every 5 seconds. If the internal temperature continues to rise, theovertemperature protection is activated and DIASINE® automatically shuts off the output, the buzzer beeps
5 times consecutively around every 5 seconds and the power LED lights red. When the internal
temperature drops below the value, DIASINE® automatically resumes output.
Output Voltage Error:
When the AC output voltage is too high or too low, DIASINE® shuts off the output, the buzzer beeps 5times consecutively around every 5 seconds, and the load LED lights red. To cancel the error status, pleaserestart DIASINE®.
Internal Voltage Error:
If the internal voltage becomes higher than specified, such as when the DIASINE® repeatedly starts, stops
and starts when the battery voltage is higher than the overvoltage warning, the protection will be activated.
To cancel the error status, stop the DIASINE®, wait a few tens of seconds, and then restart the DIASINE®.
Output Short-circuit:
When the output terminal is short-circuited or the load suddenly increases, DIASINE® stops the AC output,
the buzzer beeps 5 times continuously every 5 seconds, and the load LED lights red. To cancel thisprotection, please restart DIASINE®.
Overload:
The overload protection works in either of the 2 conditions described in Table 5.2. One is 100%-120% of
rated power and continues for about 3 minutes or more. The other is output more than 120% of rated
power and continues for about 3 seconds. When the overload protection is activated, the DIASINE® stops
the AC output and the buzzer beeps 5 times consecutively every 5 seconds and the load LED lights red.
To cancel this protection, please restart DIASINE®.
Table 5.2 The conditions of overload protection
Overload Protection

load

Output Time

Condition 1

100%-120%

3 minutes or more

Condition 2

More than 120%

3 seconds or more

20

Abnormal Output:
Abnormal output works when GR series detected the external output voltage from other GR series inparallel and found the output voltage and frequency are different. The power LED blinks red and no buzzer
sounds during abnormal output. Set all parallel GR series to the same output voltage and frequency tocancel this error.
Output Disable Protection:
If the GR series does not start the output for 10 minutes after switching to output disable mode, it will returnto standby mode automatically to protect battery. Start up the output within 10 minutes after switching GR
series to the output disable mode.
Protections can be canceled by turning DIASINE® on/off via the remoteconnector. Find out the possible causes of the protections work.
Remove these faults first before restarting DIASINE®.

MEMO

Refer to Table 5.3 for input voltage setting values of protections. Also, refer to Table 6.4 for LED indicators
when protections are operating.
Table 5.3 The Input Voltage Setting Value of Protection
Model

Input Undervoltage

Input Overvoltage

Warning

Shut off

ResumeWarning

Shut off

Resume112

11.5Vdc

10.5Vdc

12.5Vdc

18.5Vdc

19.5Vdc

18.5Vdc

124

23.0Vdc

21.0Vdc

25.0Vdc

37.0Vdc

39.0Vdc

37.0Vdc

148

46.0Vdc

42.0Vdc

50.0Vdc

74.0Vdc

78.0Vdc

74.0Vdc

When warnings or protections are operating, the buzzer could be turned on/off temporarily by pressing
setting button. If the buzzer was turned off by this method, the buzzer will beep again when other warnings
or protections are working. In addition, even the warning status is cancelled, the buzzer will beep again
when it returns to warning status.
Example 1. Undervoltage warning is working and buzzer is beeping. Press the setting button to turn off thebuzzer. When DIASINE® shuts off due to undervoltage protection, the buzzer will beep again.
Example 2. Over temperature warning is working and buzzer is beeping. Press the setting button to turnoff the buzzer. After temperature drops and the warning released, the buzzer will beep again
when the temperature warning is working again.
Change the setting to disable the buzzer (Refer to P.17).
If the AC output is stopped by the protections, such as input undervoltage, input overvoltage and overtemperature, DIASINE® will automatically recover. For other errors, manual recovery (power OFF and ON)
is required. Table 5.4 shows how GR series behaves after auto recovery. Output is resumed after auto
recovery under the single output mode. On the other hand, the output does not resume after auto recovery
under output disable mode, but the output of the unit that started by pressing the setting button and power
button resumes after auto recovery as in single output mode.
In parallel operation, GR series may not recover if a load is connected. This is because all GR series do
not resume output at the same time. They start output with a time lag in parallel operation. If a load is21

connected while the GR series is starting output, they may not be synchronized. If GR series do not recover,remove the load and reconnect the load after all GR series have resumed output.
Table 5.4 Protections and Auto Recovery
Operation

SingleMode

Protections

Parallel
OutputOutputSingleOutputDisableSingleDisableOutputDisable(Start-up

Output

Unit)

Input Undervoltage

Auto recovery and output

Input Overvoltage

resumes.

Over Temperature

Auto
recovery but

Auto recovery and output
resumes*.

no output.

Overload
Output Short-circuit
Output Voltage Error

Manual recovery is required.

Internal Voltage Error
Internal Error* GR series may not recover if a load is connected.

5-10 Remote Connector
As the Figure 5.2 method 1, connect the battery (+) to the ENABLE+ (EN+) terminal of the remoteconnector can start up the DIASINE® GR series. If the GR series is in the output disable mode after starup, it waits until an external output voltage is detected. If in the single output mode, GR series starts output.
When ENABLE+ (EN+) is removed, the GR series enters standby mode or sleep mode. As the Figure 5.2
method 2, connect the ENABLE- (EN-) terminal and the GND terminal can start up GR series. Disconnect
EN- terminal and GND terminal, GR series enters standby or sleep mode. GR series can be operated byeither method 1 or method 2. The power LED lights blue when GR series is turned ON by remote connector.
If the power button is pressed when the GR series has been turned on by remote connector, the GR
series can enter standby mode or sleep mode, and cannot be turned on again until remote connector is
disconnected.
・Method■Method11

・Method■Method22

EN+

EN-

Short: ON
Open: OFF

Battery

GND

Short: ON
Open: OFF

Figure 5.2 The Wiring of Remote Connector

5-11 Optional Terminal
DIASINE® can achieve various applications by using optional terminals on the rear of panel. Check
DENRYO Official Website for more details.
22

6. LED Indicators
The blinking frequency of each LED indicator is once every two

MEMO

seconds, repeat on and off.

6-1 The LED Indicator in Normal Status
Power LED: The power LED indicates output ON/OFF status or over temperature warning status. Refer
to Table 6.1 for LED color and status indicators.
Table 6.1 Power LED Indicators
LED

Power LED

LED Colors
Orange●Standby

Orange Blink●●●●●

Standby/ Sleep (Turned ON by remote connector*)

Green

●

Power ONBlue●

Power ON (Remote is operating)

Yellow Blink●●●●●

Over temperature warning*When DIASINE® is turned ON by the remote connector, and turned OFF by the power button, the power LED blinks orange.
In this case, the output cannot be turned on until the remote connector is removed once. The power LED also [blinks orange
in sleep mode.

Battery LED: The Battery LED indicates the voltage value of the battery during operation. Refer to Table
6.2 for LED color and battery voltage indicators. For battery voltage values on 124 and 148 models, multiply
the values listed below by 2 or 4.
Table 6.2 Battery LED Indicators
LED

Battery LED

LED Colors
Yellow Blink●●●●●

Input voltage 10.5-11.5Vdc (Input Undervoltage Warning)

Yellow●

Input voltage 11.5-12.0Vdc

Green

●

Input voltage 12.0-14.0Vdc

Blue

●

Input voltage 14.0-16.5Vdc

Purple●Input voltage 16.5-18.5Vdc

Purple Blink●●●●●

Input voltage 18.5-19.5Vdc (Input Overvoltage Warning)

23

Load LED: The Load LED indicates the percentage of output power during operation. Refer to Table 6.3
for LED color and percentage output power indicators.

Table 6.3 Load LED Indicators
LED

Load LED

LED Colors
Blue●

0-40% output power

Green

●

40-70% output power

Yellow●

70-100% output power

Yellow Blink●●●●●

Over than 100% output power (Overload Warning)

6-2 LED Indicators when Protection Activates
When the protection is operating, the LED indicates the status of the protection and the output shutoff.
Refer to Table 6.4 for the LED indicators and status of the protections.
Table 6.4 The Indicators of Protections
Lighting LED

Power LED

Battery LED

Load LED
All LED

Indicators
Red

●●●●●

Abnormal output

Input undervoltage

AC output error

Blink
Red

Internal
voltage error●

Over temperature

Input overvoltage

Overload/Loadterminal short-

Internal error*

circuited* If the internal error occurs, remove the load, and check that the input voltage is within the normal range. Please contact
your dealer if the internal error still occurs.

24

7. Troubleshooting Guide
Error Condition

Possible Cause
Input voltage error
Battery LED lights / blinks red
Over temperature protection
Power LED lights red

No AC output
voltage

Short operation
time of DIASINE®

Overload protection
Load LED lights red
Short-circuit protection
Load LED lights red
AC output terminal wiring
problemAbnormal output
Power LED blinks red
Internal error
All LEDs light / blink red
Battery problem
Lack of battery capacity

Load LEDs show
differently in parallel
operation

Input voltage or input/output
cable length are different

Output voltage,
frequency error

Wrong setting

Power LED does
not light up evenconnecting battery

Reversed connection of battery
polarity
Reversed connection warning
LED lights red
Internal fuse cuts off

Under sleep mode
Remote connector
does not work

Wiring problem

Unusual noises
when loads operate

Switching noisesuch as radio

Solution
Check the DC input voltage and make surethe input voltage is within the specification.
Check if ventilation is blocked or air
temperature is too high. Reduce the load
capacity or lower the air temperature aroundthe DIASINE®.
Check whether the load capacity and theinstantaneous value exceed the rated powerof the DIASINE® or not.
Check whether the load wiring is shortcircuited or not.
Check that the wiring to the AC output
terminal is correct or not.
Set all parallel GR series to the same output
voltage and frequency.
Internal parts of DIASINE® may bedamaged. Please contact the dealer.
Please replace the battery.
Please check the battery specifications andincrease the battery capacity.
Due to the output error between parallel
units, the color of the load LEDs may mix
green and blue, or green and yellow. If thecolors are blue and yellow, check and makeeach GR series input voltage and cable
length the same.
Change the settings (Refer to P.17)

Reconnect the correct polarity
Internal parts of DIASINE® may bedamaged. Please contact the dealer.
Press and hold the power button and setting
button for 3 seconds. If LED still does notlight, disconnect battery and reconnect after
5 seconds.
Check that the remote connector is properly
connected.
Try the methods* below to reduce noise:
1. Keep DIASINE® away from loads
2. Wire grounding terminal
3. Install appropriate line filter circuit* Effect may differ depending on environment or device.

If the error condition cannot be solved, please consult the dealer.
25

DENRYO CO., LTD.
28-5, Nishinippori 2Chome, Arakawa -ku,
Tokyo 116-0013, Japan
Phone : +81-3-3802-3671
FAX : +81-3-3802-2974
Email: info-en@denryo.com
www.denryo.com/en
DM-551426