EM231 Dual-channel Weighing Module（231-7WB32）

NegotiableUpdate on October 18

Model

Nature of the Manufacturer: Other

Product Category: CTSC-200 PLC

Place of Origin: City, Province

Online Consult Contact Information

Overview

EM231 Dual-channel Weighing Module（231-7WB32）

Product Details

Product Description

Order Data

Order Data	Order No.
Input signal through dual-channel transducer，16bit，sampling rate20Hz（uni-channel）/10Hz（dual-channel）,6 VDC,150mA per channel excitation power output	CTS7 231-7WB32

Technical Spec

Performance Parameters

Detailed Information:

Major Features:

· Bus and power supply isolation, high reliability, good anti-jamming capability

· 16bit sampling precision, hardware filter technique, more accurate and stable measured

values.

· Reverse protection and surge absorption function of its power supply makes it adaptable to

severe industrial environment.

Use Standard

· use shielded twisted pair to transmit signals and must have one end earthed

· When the system is in a good state, the earthed end must be connected to the ground

wire, otherwise it is not earthed.

· it is suggested to use Trust PLC library function to read data from weigh module

· Calibration needed when replacing modules

When the system is dual-channeled and has one transducer connected, another transducer should be short-circuited to avoid alarm or shift to uni-channel mode.

Specification	CTS7 231-7WB32
Power Consumption	5W
Power Consumption
+5VDC consumed current	＜140mA
L+ consumed current	＜100mA
L+ Coil voltage range	20.4－28.8VDC
LED indicator	24 VDC Power Supply Good: ON = no fault, OFF = no power ; SF: ON=module fault, Blink=input signal error, OFF=normal;
Input type	Strain gauge，4 or 6wire mode of connection
Input range	0~1mV/V 0~2mV/V 0~3mV/V 0~4mV/V
Input point	2AI
Isolation Features
field side to logic circuit	500VAC
Field side to 24VDC	500VAC
24V to logic circuit	500VAC
Common-mode input range（from input channel to input channel）	0
Common mode rejection	>120dB@120VAC
Input Resolution
temperature coefficient null point	≤±0.1uV/K
Principle of measurement	Sigma-Delta
length of conducting line to transducer	Maximum 500 meters
Noise suppression	85db@50Hz/60Hz
Data word format	Voltage：0 to＋32000
Resolution	16 bits
Intrinsic error	0.05％Fs
Repeatability	0.1％Fs

Related Information

Library function of weigh module TrustPLC 231-7WB32.

Installation

Terminal Connection

Weighing module which is a measuring module of high-precision requires reliable measuring low signal level (about 1.5uV). Thus, to make sure it works, it is important to choose appropriate

assembly and cable connection.

While connect weighing transducer, following rules should be obeyed.

· If more than one transducer is going to be connected (if they are weighing transducers,

they must be parallel connected), one junction box must be used. If the distance between

weighing transducer and module or between weighing transducer and junction box is

longer than the length of available cable of weighing transducer, a dedicated extension box

Should be used.

· Shield of cable should always reach as far as to cable gland of junction box or extension box.

· Use stranded wire to connect cable in certain circuit and keep it shielded.

---transducer wire SEN+/SEN-；

---measuring voltage coil SIG+/SIG-；

---supply voltage coil EXC+/EXC-.

·Shielded wire must be joint with shield connector.

Four- Wire connection
When connect four-wire transducer, please make sure that EXC with SENS, EXC with SENS- are short
circuited. Otherwise, the module may not work normally.
2、Six-wire connection
3、Module Connection Diagram
DIP Switch Setting

DIP Switch Configuration
Switch 1、2、3、4、5、6	setting	function
SW1、2	01	Choose 1mV/V transducer
	00	Choose 2mV/V transducer （default）
	10	Choose 3mV/V transducer
	11	Choose 4mV/V transducer
SW3	0	Choose dual channel working model （default）
	1	Choose uni-channel working model
SW4	0	Choose filter1（default）
	1	Choose filter 2
SW5、6、7、8	00	Spare, reserved
Remark： Ø Default state：000000 Ø Which filter to be used is determined by software according to need of debug.