AD-1612

Comparator Buzzer
Instruction Manual

2. Introduction

4-2. Accessories

This manual describes how the AD-1612 comparator buzzer works
and how to get the most out of it in terms of performance.
Read this manual completely before using the AD-1612.

(1) DC cable (1.8m): 1 pc

Scale connection example(2) Rubber feet：4 pcs (3) Instruction manual(This document)(FG communication option)© 2018 A&D Company, Limited

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1WMPD4003659A



Compliance with FCC Rules
Please note that this equipment generates, uses and canradiate radio frequency energy. This equipment has beentested and has been found to comply with the limits of Class A
digital devices pursuant to Part 15 of FCC rules. These rules
are designed to provide reasonable protection againstinterference when equipment is operated in a commercialenvironment. If this unit is operated in a residential area, it may
cause some interference and under these circumstances theuser would be required to take, at his own expense, whatevermeasures are necessary to eliminate the interference. (FCC =Federal Communications Commission in the U.S.A.)

2

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1. Safety Precautions
All safety messages are identified by the following, "WARNING" or"CAUTION", of ANSI Z535.4 (American National Standard Institute:
Product Safety Signs and Labels). The meanings are as follows:

WARNINGCAUTION

A potentially hazardous situation which,
if not avoided, could result in death orserious injury.
A potentially hazardous situation which,
if not avoided, may result in minor ormoderate injury.

By connecting the balance / scale comparator output to theAD-1612, up to five levels of comparator lights and up to fivetypes of buzzer sounds can be output.
The AD-1612 can light up or sound according to the contact input.
(short-circuited between each pin and COM)
The buzzer sound level can be adjusted using the volume knobon the front panel of the device.
Power for the AD-1612 is provided using the AC adapter
provided for the balance / scale. By connecting the scale andAD-1612 using the provided DC cable, power can be provided toboth the balance / scale and AD-1612 by using a single ACadapter.
By connecting the signal lines to the terminals on the rear side ofthe device, the RS-232C can be bypassed to the D-sub 9 pin
connector.
Carefully confirm the AC adapter rating before connecting it tothe device.
Failure to do so may result in mechanical damages to theinternal circuit or result in buzzer sound or LED output
fluctuating.
Adjusting the volume for buzzer sound level to MIN. means thebuzzer will sound very quietly, not that it will output no sound atall. To set the buzzer to output no sound, the device must be set
using the function settings. Refer to “9. Function Settings”.
The COM is internally connected to GND. Refer to “8. Internal
Configuration”.
Connecting the plus polarity of the external device to the COM oradding high voltage to the HI / LO terminals side may cause
mechanical damage.
If the desktop stand slips, attach the provided rubber feet to thebottom of the stand.

This manual is subject to change without notice at any time
to improve the product.
Product specifications are subject to change without any
obligation on the part of the manufacturer.
When using the AD-1612, the following safety precautions
should always be observed.

ModeOperations



Do not disassemble the AD-1612. Disassembling may
cause damage to the AD-1612. Damage caused bydisassembling will not be covered by the warranty. Contact
your local A&D dealer if the AD-1612 needs service orrepair.
If a problem has occurred and you cannot resolve it, stopusing the AD-1612.

Entering the mode

(1)

Normalmode

Performs comparator
operations(2)

Settingmode

Sets LED brightness
and buzzer sound4-1. AD-1612

Comparator light

SELECT key

VolumeLOOKHIOff

Connect the signal lines of the relay contact output of the device tothe 1st to 6th pin of the terminal block.
Note Confirm “8. Internal Configuration” beforehand to properly
perform the wiring.

Pilot lamp

Comparator light
Red: Right end
Yellow: Second from the rightGreen: Center
Yellow: Second from the left
Red: Left end-----

6-3. Power Supply
Power is supplied to the AD-1612 by the AC adapter whenconnected to the [IN] DC jack. (The pilot lamp is on.) Confirm the specifications of the AC adapter before insertingit. (DC 7.5 to 15 V) When using the AC adapter provided for the balance / scale,connect the AC adapter to the [IN] DC jack. Then, connectthe DC cable to the [OUT] DC jack and balance / scale.
Note 1 When the buzzer is at the maximum volume, theAD-1612 needs up to 500 mA of current. When using ata large buzzer volume, supply power to the balance /scale and AD-1612 with a separate AC adapter. (Referto “11-2. Options sold separately”.)
Note 2 When grounding the device, use the screw (including
inner clip washer) on the side of the device as thegrounding terminal.
6-4. Example<Connecting the comparator output of the EK-i series>

Connect the signal lines of the balance / scale tothe 7th to 10th pin of the terminal block.
Connect the cable to the connector on side of thedevice.

EK-iLO

Solid state relay

Output connector
MSTB2.5/4-GF-5.08
COM1LO
2OK3HI4

LO*

OK*

HI*

MAX

Inside ofEK/EW-i

6789

Desktop stand

Inch screw

Speaker

RS-232C port

DC jack for AC adapter

12345
MIN

AD-1612*
DC jack (IN)DC jack (OUT)

DC cable (provided)Power6-2. Connecting the RS-232C

SELECT

AD-1612

9 N.C.

AC adapter (provided with EK-i)

D-sub 9 pin:(male)SET key

DC jack(2)

OKHIMINMAX

AD-1612

Treminal block (1 to 6)

Comparator output(OP-04)** Comparator output terminal assignment table **EK-i
Terminal
Pin No. Description

Groundterminalscrew

4 N.C.

7 Request to sendOn

6-1. Connecting the comparator contact

Terminal block:3 Transmit data

8 Clear to send

Press and holdthe [SET] key insetting mode

Signal
name
HI-2
HI-1
OK
LO-1
LO-2
COM

2 Receive data

6 Data set readyAt start up

Press and holdthe [SET] key innormal mode

PinNo.
123
45
6

1 N.C.

5 Signal ground

7Pilot lamp

6. How to Connect

CAUTION

55. Mode

4. Parts Description / Accessories

SET

33-2. Precautions for useTerminal block
10 SG
9 RXD
8 TXD
7 DSR

DIN 8pin3-1. FeaturesAD-1612

FG

3. About the AD-1612
Pin assignments

AD-1612
Terminal
Pin No. Description
Color

LEDPosition
Second from theright

4HI

2

HI-1

Yellow

3

OK

3

OK

GreenCenter

2LO

4

LO-1

Yellow

Second from theleft

1COM

6COM

-----

Refer to the A&D website for other information on connections.
Terminals-1--2--3--4-<Bypassing the RS-232C output of the FG series>- When the RS-232C is bypassed, power for the AD-1612 itself is notneeded..
External indicator
Printer
D-sub 9 pin

D-sub 9 pin

FGLO

OKHIRXD
GND

MIN

Step

Press andhold3

All LED onLO

OK

Treminal block (7 to 10)(AX-KO507-S200)

RS-232C communication (OP-23)
DIN 8 pin (available for 7 pin)** RS-232C communication terminal assignment table **FG (AX-KO507)
DIN 8 connector
Discrete wire
Pin
Description Cable color
No.

AD-1612
Terminals
D-sub 9 connector
PinPinDescription
Description
No.
No.

7DSRBlue

72RXD

White

83TXD

Red

95SGYellow

10DSR
TXD
(receive data)
RXD(transmit data)
SG

6DSR

3TXD

2RXD

5SG

7. How to Use
1) Wire to the terminal block.
 Refer to “6. How to Connect”.
2) Connect the device to the power using the AC adapter.
 Pilot lamp is on.
3) Set the comparator brightness and buzzer.
(only at initial use and setting change) Refer to “9. Function Settings”.
4) Turn on the power for external devices connected to theAD-1612.
5) Each comparator light lights up and the buzzer sounds
according to the contact outputs.
Priority of buzzer sound when at least 2 LEDs simultaneously light up
HI 2 > LO 2 > HI 1 > LO 1 > OK5V
Contactoutput

HI/OK/LOOrrelayswitch
COMCOM

LED
Microcomputer

BuzzerInput(terminal block)

OutputPhotocoupler

Comparator input

Contact input (Relay/Switch/Photocoupler)COM

Common terminal (6th pin of terminal block)ON

1V or less (1mA at short circuit)OFF

2.5V or more-5-

Comparator lightbrightness

Buzzer sound for thecomparator output

Press the keyto switch.

Parameters0123 ◆
450 ◆
12345

OffDark

Descriptions

4. Press the [SET] key to confirm.

Error

Confirm brightness
 Go to next item settings

HI-2 on

5. The HI-2 LED is on and the buzzer
sounds with the HI-2 setting sound.
(Factory settings are set to no sound.)
6. Press the [SELECT] key several
times to select the buzzer sound.
(Refer to “9-2. Function list”.)
7. Press the [SET] key to confirm.

LOOKHI

1Press the keyto switch.

Confirm HI-2 sound Go to next item settings

2The comparator
light cannot
properly befunctioned.

3Buzzer soundfluctuates.

4

Bypass for the
RS-232C
cannotproperly befunctioned.

HI-1 on

8. The HI-1 LED is on and the buzzer
sounds with the HI-1 setting sound.

LOOKHI

9. Repeat Steps 6 and 7 four times
until LO-2 is set.
10.Return to Step 2 after finishing theLO-2 setting.
HI-2
buzzerHI -1
buzzer[SET]

OKbuzzer[SET]

11.Press and hold the [SET] key after
the settings for all items are
finished to return to normal mode.
Pilot lamp: off (setting mode) on (normal mode)

The pilot lamp
does not lightup even when
the device isconnected tothe powerusing the ACadapter.

[SET]

LO-2
buzzerLO-1
buzzer
[SET]

[SET]

11-1. General
Model namePower supply

BrightNo soundRepeating short beep
Two repeating short beeps
Three repeating short beeps
Rapid short beeps
Long beep

10. Trouble Shooting[SET]

Five sets of the following configurations
are included in the device.
AD-1612

6

3. Press the [SELECT] key several
times to select the LED brightness.
(Refer to “9-2. Function list”.)

LEDbrightness

8. Internal Configuration

Balance / scale

ItemsHIDSRNo
connection(inside of the OP-23)

11. Specifications

9-2. Function list

2. All LEDs are on.

MAX

AD-1612TXD

9-1. How to set
1. In normal mode, press and holdthe [SET] key.
Pilot lamp: on (normal mode) off (setting mode)

AD-1612*(AX-KO2466)
RS-232C cable

9. Function Settings

Possible causes
Remedies
When the power cannot be provided
Use a proper AC adapter after
confirming output rating of theThe proper AC
AC adapter.
adapter is not
Refer to the A&D website for aused.
proper AC adapter made byA&D.
Poor AC adapter
Fully insert the AC adapter.
connection
When the device is not in normal mode
The device is in
Press and hold the [SET] key tosetting mode.
return to normal mode.
Firmly reconnect the signal
wires to the terminals afterPoor connection
confirming the terminals.
The device is not
Confirm the comparator output ofreceiving a signal.
the balance or scale.
The connection
Confirm the connection of theport is not correct.
port.
The proper AC
Use a proper AC adapter afteradapter is notconfirming output rating of theused.
AC adapter.
Keep the device clean after
The front of theconfirming there is nothing
speaker iscovering the holes on the rear
blocked.
side of the device.
Confirm the RS-232C
connector again.
 Refer to “6. How to Connect”.
Connection error
Firmly reconnect the signal
wires to the terminals after
confirming the terminals.

Operatingtemperature range
Display
Buzzer sound level
Power consumption
Dimensions(W x D x H)
Mass(including the stand)
Accessories
Connectible devices
Connector shape

AD-1612
AC adapter(DC7.5V to 15V / 500mA)-10 ºC to 40 ºC (no condensation)
LED: HI-2 (red)/HI-1 (yellow) /OK (green)/
LO-1 (yellow)/LO-2 (red)Up to approx. 95 [dB]
Approx. 2.1 VA (when LEDs are lit andbuzzer sound is at maximum)
147 x 80 x 115 [mm]Approx. 700 [g]DC cable, rubber feet and instruction
manualBalances or scales made by A&D thatare equipped with a comparator option(Refer to the A&D website for details)
RS-232C: D-sub 9 pin, maleA&D website
https://www.aandd.jp/products/weighing/wproduct.html#peripherals

11-2. Options sold separately
Pole mounting bracket
AD1612-14
Communication cable
AX-KO507-S200
DIN 7 – discrete wire, 2mAX-KO5862-S200
DIN 8 – discrete wire, 2m
AX-KO5862-N200
Discrete wire - Discrete wire, 2m
AC adapter:
Refer to the A&D website.
Note When supplying power to balance / scale, use the AC
adapters supplied with them.

Note If the remedies above do not resolve the problem or if otherproblems occur, contact your local A&D dealer.

Press andhold

Note 1 By pressing and holding the [SET] key even before settings
are completed for all items, the device returns to normal
mode after memorizing the settings for items that havebeen configured.
Note 2 Settings are maintained in non-volatile memory even when
the power is turned to off.
Note 3 In setting mode, the device does not perform comparator
operations. Return the device to normal mode to use
comparator mode after setting is complete.

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