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EM231 Thermocouple Modules(231-7PD32,231-7PF32)

4AI×TC/8AI×TC,16BIT,isolation.Temperature measurement accurate and stable

Order No.:CTS7 231-7PD32/CTS7 231-7PF32

Specification:4AI×TC/8AI×TC

Product Description

Order Data

Order Data

Order NO.

CTSC-200 EM231, 4AI×TC, J/K/S/T/R/E/N,+/-80mV   CTS7 231-7PD32
CTSC-200 EM231, 8AI×TC, J/K/S/T/R/E/N,+/-80mV       CTS7 231-7PF32

 

Technical Spec

Performance Parameters

Specification

 EM231, 4AI×TC

 EM231, 8AI×TC

Physical Features

   Dimensions(W×H×D)

71.2×80×62mm

71.2×80×62mm

   Power Loss(dissipation)

1.7W

1.7W
Power Consumption
    From +5V(from I/O bus)

87mA

    From L+60 mA
    L+  voltage range,class  2 or DC sensor supply20.4~28.8V DC
    LED indicator24 VDC Power Supply  Good: ON = no fault,OFF = no power ;
           SF: ON=module fault, Blink=input signal error, OFF=normal;
Analog Input Features
   Input typeFloating Thermocouple
   Input rangeTC type(select one per module):    S, T, R, E, N, K, J
           Voltage range: +/-80mV
   Number of analog input points4 points8 points
Isolation

    Field to Logic

    Field to 24V DC
    24V DC to logic

500V AC
500V AC
500V AC

    Common mode input range
               (input channel to input channel)

120V AC

    Common mode rejection    

>120dB@120V AC

Input resolution

    Temperature

    Voltage

0.1℃/0.1℉ 
 15 bits plus sign

Measuring principle

Sigma-Delta
Module update time for all channel425ms825ms
wire length to sensor, maximum100 m
Wire loop resistance100Ω
Suppression of interference85dB@ 50Hz/60Hz/400Hz
Data word formatVoltage: -27648 to +27648
Input impedance≥1MΩ
Maximum input voltage30V DC
Input filter attenuation-3dB@ 21kHz
Basic error0.1% FS(Voltage)
Repeatability0.05% FS

Cold junction error

±1.5℃
24V DC supply voltage range20.4 to 28.8 VDC
Configuration
  • DIP Switches Configuration

The EM231 TC modules provide a convenient, isolated interface to seven thermocouple types: J, K, E, N, S, T, and R, which also allow the CTS7-200 PLC to connect low level analog signals of 80mV range. You should use the DIP switched to select the thermocouple type, open wire check, temperature scale, cold junction compensation and burnout direction. All thermocouples connect to a module must be of the same type.

The configuration DIP switches are located on the right bottom of the modules, as shown in the figure 1 and Figure 2, the EM231 4TC module has a 8-pin switches and the EM231 8TC module has a  6-pin switches.

For the DIP switch settings to take effect, you need to power cycle the PLC or the 24V power supply.


Figure 1   EM231 4AI×TC


Figure 2  EM231 8AI×TC

Selecting the thermocouple type by setting DIP switch 1 to switch 8 as shown in Table 1 and Table 2 for the EM231 4TC Module,  and Selecting the thermocouple type by setting DIP switch 1 to switch 6 as shown in Table 1 and Table 2  for the EM231 8TC Module.

For the EM231 4TC Module, DIP switch 4 is not used, it should be set to the off position. For the EM231 8TC Module, the open wire check is always enable.

 

Table 1     Selecting the Thermocouple Type

Thermocouple TypeSW1SW2SW3
J (Default)000
K001
T010
E011
R100
S101
N110
+/- 80mV111

Table 2     Selecting the others

FeatureEM231 4AI×TCEM231 8AI×TC
positionstatuspositionstatus
Burnout DirectionSW5

0: Upscale (+3276.7degrees)
           1: Downscale (-3276.8degrees)

SW4

0: Upscale (+3276.7degrees)
           1: Downscale (-3276.8degrees)

Open Wire CheckSW60: enable, 
1: disable
always enable
Scale SelectSW70:Celsius (℃), 
1:Fahrenheit (℉)
SW50:Celsius (℃), 
1:Fahrenheit (℉)
Cold Junction EnableSW8

0: enable
1:disable

SW60: enable
1:disable

 Software Configuration

The EM231 8AI×TC module has different beginning input address in different slot and its address is not in AIW but in VW, you can calculate the address by the following formula,

                   x(VWx) = a × 64 + b × 2  (a is the slot no., and b is the point no.)

Table 2  Address for the EM231 8AI×TC

VWx
Point 0
Point 1
Point 2
Point 3
Point 4
Point 5
Point 6
Point 7
Slot 0
VW0
VW2
VW4
VW6
VW8
VW10
VW12
VW14
Slot 1
VW64
VW66
VW68
VW70
VW72
VW74
VW76
VW78
Slot 2
VW128
VW130
VW132
VW134
VW136
VW138
VW140
VW142
Slot 3
VW192
VW194
VW196
VW198
VW200
VW202
VW204
VW206
Slot 4
VW256
VW258
VW260
VW262
VW264
VW266
VW268
VW270
Slot 5
VW320
VW322
VW324
VW326
VW328
VW330
VW332
VW334
Slot 6
VW384
VW386
VW388
VW390
VW392
VW394
VW396
VW398

Notice:  Because the offset address of Td2X text display is also in VW0, so If you need to use Td2X text display in your system, please don’t put the EM231 8AI×TC module in slot 0, or the td2X will not work normally. SIEMENS TD200 text displayer is same as TD2X.(SIEMENS is the trademark of SIEMENS AG.)

 

Installation

Size Diagram

Wiring Diagram

Return

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