Analog Signal Conditioner
AD-4541-V (Voltage output type), AD-4541-I (Current output type)
Instruction Manual

4. Block Diagram
Power 24 VDCSensor input
DC/DC converter

Input shield SHD

With isolation

1. Outline
AD-4541-V and AD-4541-I are analog signal conditioners utilizing a load cell or strain gauge as sensor input and converts signals
such as mass, acceleration, pressure and torque at the signal level, to an output suitable for a PLC or PC analog input.
The conditioners can be mounted on a DIN rail or on the wall.

EXC-InputEXC+LC excitation
5 VDC

SIG-Standard
1 mV/V

2. Specifications
Category
Input

OutputPowerGeneral

OthersItem

Offset/gain
adjustment

Description

Zero adjustment range-0.5 mV/V to +0.5 mV/V

Span adjustment range

0.4 mV/V to 3.2 mV/V

SIG+

Non-linearity

0.05% of F.S. typ.

Loadcell excitation

5 VDC 60 mA max. (Can be used with one loadcell of 120Ω or maximum four loadcells of 350Ω )Zero temperature coefficient

2μV/°C RTI typ.

Span temperature coefficient

200ppm/°C typ.

Frequency response

DC to 2 Hz（-3dB）

Response

Approx. 190 ms (0% to 90%)

Loadcellorstrain gauge

Input noise

2μVp-p RTI typ.
1 mV/V ±0.2% typ.

Voltage output (AD-4541-V)-2 V to +2 V (Load 2kΩ or higher)

Current output (AD-4541-I)

4 mA to 20 mA (Load 250Ω or lower)

Voltage

24 VDC +10%-15%Current

100 mA max (Approx. 2.4W)

POWER+Output

LPF

Amplifier-5°C to +50°C

Caution: Before cable connection, be sure to turn the power off.
Insert the accessory screwdriver perpendicularly into the terminal block as shown in theillustration to the right, until stopped. At this time, do not rotate or twist the screwdriver.
The screwdriver, when inserted firmly, stands alone.
With the screwdriver inserted, insert the cable and pull out the screwdriver to connect the cable.
To disconnect the cable, insert the screwdriver and pull out the cable.
Remove the insulation from the cable tip to expose cables 5 to 6 mm long. Twist the cables
lightly and connect to the terminal block. (See the illustration below.)

MassApprox. 90 gTerminal

Spring clamp type22

Wire 0.08 mm to 1.5 mm (AWG 28-14)
Installation

Maximum outside diameter 3.4 mm

DIN rail or screw

Material (Body)

PBT (V0)

Isolation

Input output to power supply

Insulation resistance

500 VDC for 1 min

Accessories

Flathead screwdriver 1 pc, Instruction manual (this document) 1 pc

3. External dimensions
Sensor input terminal

OUT+Voltage or current output

Insert thescrewdriverperpendicularly

5 to 6 mm
Cable treatment

The illustration below is the AD-4541-V.
The size of the AD-4541-1 is the same as
the AD-4541-V.

Zero adjustment
control

7. Calibration(1) Zero adjustment
With no load on the sensor, use the zero adjustment control to adjust the conditioner so that the analog output will be the zero point.
(2) Span adjustment
With load on the sensor, use the span adjustment control to adjust the conditioner so that the analog output will be the designated value.
If no load is to be applied to the sensor, use the CAL switch to add a pseudo value of 1 mV/V to the input and make an adjustment.
* Repeating the above adjustments several times will improve the accuracy.

8. Precautions• Install the conditioner securely so that it is free from vibrations and impact.
• Be sure to turn the power off before cable connection.
• Keep the interior free of dust and foreign materials. They may cause the damage to the conditioner.
• When connecting cables or operating the controls and CAL switch, use the accessory screwdriver.
• When operating the controls and CAL switch, be sure to insert the screwdriver perpendicularly. Inserting the screwdriver with a tilt
may cause a short circuit.
• The zero adjustment and span adjustment controls have a maximum number of revolutions of 15. Do not rotate them more thannecessary.
• Do not disassemble or modify the conditioner. It may cause the damage to the conditioner.
• Avoid condensation during operation and storage.
• Do not immerse the conditioner in water.

Span adjustment
control

CAL switch
When pressed, a pseudovalue of 1mV/V is added
to the input.
Analog output terminaland power terminal
DIN rail mounting spring

OUT-

6. Cable connection

85%RH or lower (No condensation)-20°C to +70°C

Output shield• Mounting on the DIN rail
Using the accessory screwdriver, push out the DIN rail mounting spring located at thebottom of the casing and secure the casing on the DIN rail.
• Using the screws
Using the holes on four corners, the casing can be secured on the wall with the screws.

Operating temperature

45W x 122H x 24D mm

Analog output
SHD

Level converter-2 to +2Vor
4 to 20 mA*Depends on the model

Operating humidity
External dimensions

Two sets of two terminals
in parallel. Use them forcrossover connection.

5. Installation

Calibration standard

Storage temperature

POWER-Unit: mm