Feeder Terminal REF 541, REF 543, REF 545.
1MRS750443-MBG
38
Table 10: Digital inputs
Power supply version PS1/240 V (High) PS1/240 V (Medium),
PS2/240 V
PS1/48 V (Low),
PS2/48V
Input voltage, dc 220 V 110/125/220 V 24/48/60/110/125/
220 V
Operating range, dc 155…265 V 80...265 V 18...265 V
Current drain ~2…25 mA
Power consumption/input <0.8 W
Pulse counting (specific digital inputs),
frequency range
0…100 Hz
Time synchronization (specific digital
inputs) synchronization rate
once per minute or once per second
Table 11: RTD/analogue inputs
Supported RTD sensors 100 Platinum TCR 0.00385 (DIN 43760)
250 Platinum TCR 0.00385
1000 Platinum TCR 0.00385
100 Nickel TCR 0.00618 (DIN 43760)
120 Nickel TCR 0.00618
250 Nickel TCR 0.00618
1000 Nickel TCR 0.00618
10 Copper TCR 0.00427
120 Nickel TCR 0.00672 (MIL-T-24388C)
Max lead resistance
(three-wire
measurement)
200 per lead
Accuracy ±0.5% of full scale
±1.0% of full scale for 10 Copper RTD
Isolation 2 kV (inputs to outputs and inputs to protective earth)
Sampling frequency 5 Hz
Response time Filter time + 30 ms (430 ms...5.03 s)
RTD/ Resistance
sensing current
max 4.2 mA RMS
6.2 mA RMS for 10 Copper
Current input impedance 274 ±0.1%
Table 12: Signal outputs
Max system voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 0.5 s 10 A
Make and carry for 3 s 8 A
Breaking capacity when control circuit time-constant
L/R <40 ms, at 48/110/220 V dc
1 A/0.25 A/0.15 A
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