Twido Programmable controller

Characteristics
Twido programmable controller
Analog I/O extension modules
Characteristics of 2 and 4-channel analog input modules
Module type TM2 AMI 2HT TM2 AMI 2LT TM2 AMI 4LT
Number of channels 2 high-level inputs 2 low-level inputs 4 inputs
Range Voltage Current Thermocouple Voltage Current Temperature
probe
0…10 V 4…20 mA Type J: - 200…760°
Type K: - 270…1370°C
Type T: - 270…400°C
No isolation between
the input channels
0…10 V 0…20 mA Pt100/1000:
- 200… 600°C
Ni100/1000:
- 50…150°C
Type Non-differential Differential Non-differential
Resolution 12 bits 12 bits 12 bits
LSB value 2.5 mV 4.8 μA Type J: 0.3°C
2.5 mV 4.8 μA 0.15 ° K
Type K: 0.325°C
Type T:0.1°C
Connection
Removable screw terminal block
Sensor cabling
Shielded cable (shielding to be connected to the TM2 XMTGB ground connection plate)
Permissible continuous overload 13 V c 40 mA ± 7.5 V c 40 mA 13 V –
Input impedance 1 MΩ min. 10 Ω 1 MΩ min. 10 KΩ 470 Ω > 10 kΩ
Maximum sampling duration ms 10 200 160
Acquisition period ms 10 per channel + 200 per channel + 160 per channel 320 per channel
1 controller cycle time 1 controller cycle time + 1 controller cycle time
Measuring Max. error at 25°C % FS ± 0.2 0.2 ± 5°C (1) ± 0.2 ± 0.4
precision Temperature coeffi cient % FS/°C ± 0.006 ± 0.006 ± 0.009 ± 0.004
Repeat accuracy after stabilization time % FS ± 0.5 ± 0.5 ± 0.1
Nonlinearity % FS ± 0.2 ± 0.2 ± 0.02
Total error % FS ± 1 ± 1 ± 0.5
Crosstalk 2 low signifi cance bits max. 1 low signifi cance bit max.
Dielectric Between channels Non-isolated Non-isolated
strength Between channels and external supply V rms 500 a Non-isolated
Between channels and internal logic V rms 500 a 2500 a 2500 a
Isolation
Photocoupler between the input and the internal circuit
External supply V Nominal voltage 24 c; Limit values: 20.4…28.8 c (ripple included)
Consumption Internal 5 V c supply mA 50 60 50
External 24 V c supply mA 40 30 60
Characteristics of 8-channel analog input modules
Module type TM2 ARI 8HT TM2 AMI 8HT TM2 ARI 8LRJ/8LT
Number of channels 8 inputs 8 inputs 8 inputs (2 groups of 4 inputs)
Temperature Current Voltage Temperature probe
Range
Type
NTC probe, PTC probe,
100 Ω < R < 10 kΩ
Non-differential
0…20 mA 0…10 V Pt100: - 200…600°C
Pt1000: - 50…200°C
Resolution 10 bits with NTC (2) 10 bits 12 bits
LSB value – 19.5 μA 9.7 mV 0.2°C (Pt 100), 0.06°C (Pt 1000)
Connection Sensors Removable screw terminal block TM2 ARI 8LRJ, RJ11 connectors
TM2 ARI 8LT, removable screw terminal blocks
External supply Removable screw terminal block Removable screw terminal block
Sensor cabling
Shielded cable (shielding to be connected to the TM2 XMTGB ground connection plate)
Permissible continuous overload – 40 mA 13 V –
Input impedance >1 MΩ 470 Ω > 10 kΩ > 10 kΩ
Maximum sampling duration ms 160
Acquisition period ms 160 per channel + 1 controller cycle time 320 per group of channels (channels
0…3 and channels 4…7) or 1280 max.
+ 1 controller cycle time
Measuring Max. error at 25°C % FS ± 0.2 ± 0.5 (Pt 100), ± 0.3 (Pt 1000)
precision Temperature coeffi cient % FS ± 0.01 ± 0.01
Repeat accuracy after stabilization time ± 0.4% FS ± 0.1°C
Nonlinearity % FS ± 0.002 –
Total error ± 1% FS 4°C (Pt 100), 1°C (Pt 1000)
Crosstalk 1 low signifi cance bit max. –
Dielectric
strength
Between channels Non-isolated Non-isolated
Between channels and external supply V rms Non-isolated 500 a
Between channels and internal logic V rms 2500 a 2500 a
Photocoupler between the input and the internal circuit
Isolation
External supply Nominal voltage V 24 c 24 c
Limit values V 20.4…28.8 c (ripple included) 19.2…30 c (ripple included)
Consumption Internal 5 V c supply mA 60 90
External 24 V c supply mA 45 140 max.
(1) ± 5°C: Precision of cold junction compensation
(2) With PTC probe, 2 threshold detection ( 1: value y low threshold, 2: value included between low and high threshold, 4: value u high threshold)
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