Table 12. Binary inputs
Description
Value
Operating range
±20% of the rated voltage
Rated voltage
24...250 V DC
Current drain
1.6...1.9 mA
Power consumption
31.0...570.0 mW
Threshold voltage
16...176 V DC
Ripple in the DC auxiliary voltage
Max 15% of the DC value (at frequency of 100 Hz)
Table 13. RTD/mA inputs and mA outputs
Description
Value
RTD inputs
Supported RTD sensors
100 Ω platinum
250 Ω platinum
100 Ω nickel
120 Ω nickel
250 Ω nickel
TCR 0.00385 (DIN 43760)
TCR 0.00385
TCR 0.00618 (DIN 43760)
TCR 0.00618
TCR 0.00618
Supported resistance range
0...4 kΩ
Maximum lead resistance (three-
wire measurement)
100 Ω per lead
Isolation
2 kV (inputs to protective earth)
Response time
<1 s
RTD/resistance sensing current
<1 mA rms
Operation accuracy
Resistance
Temperature
± 2.0% or ±1 Ω
±1°C
mA inputs
Supported current range
±0…20 mA
Current input impedance
44 Ω ±0.1%
Operation accuracy
±0.5% or ±0.01 mA
mA outputs
Supported current range
±0…20 mA
Maximum loop impedance
700 Ω
Operation accuracy
±0.1 mA
Table 14. Signal outputs and IRF output
Description
Value
Rated voltage
250 V AC/DC
Maximum continuous burden (resistive load, AC)
1250 VA
Continuous contact carry
5 A
Make and carry for 3.0 s
10 A
Make and carry 0.5 s
15 A
Breaking capacity when the control-circuit time constant L/R<40 ms, at
48/110/220 V DC
1 A/0.25 A/0.15 A
Minimum contact load
10 mA at 5 V AC/DC
1MRS759144 A
REX640
Product version: 1
30
ABB
Summary of Contents for RELION REX640
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