
57/89 Device handbook A
PLUS
with / without LED display
,
157
679-19, 04/2016
I/O interface
Available inputs and outputs
Basic unit
- 1 relay output, changeover contact
- 1 digital output (fixed)
- 1 digital input (fixed)
I/O extension 1
- 2 relay outputs, changeover contact
- 4 bipolar analog outputs
- 2 digital inputs/outputs, each configurable as input or output
I/O extension 2
- 2 relay outputs, changeover contact
- 6 digital inputs/outputs, each configurable as input or output
Analog outputs
via plug-in terminals, galvanically isolated
Linearization:
Linear, quadratic, kinked
Range:
± 20 mA (24 mA max.), bipolar
Uncertainty:
± 0.2% of 20 mA
Burden:
≤ 500 Ω (max. 10 V / 20 mA)
Burden influence:
≤ 0.2%
Residual ripple:
≤ 0.4%
Response time:
60…100ms (for 2 cycles averaging time of RMS values)
Relays
via plug-in terminals
Contact:
changeover contact, bistabil
Load capacity:
250 V AC, 2 A, 500 VA
30 V DC, 2 A, 60 W
Digital inputs/outputs
via plug-in terminals
Digital inputs
(acc. EN 61 131-2 DC 24 V type 3):
Nominal voltage
12 / 24 V DC (30 V max.)
Logical ZERO
- 3 up to + 5 V
Logical ONE
8 up to 30 V
Digital outputs
(partly acc. EN 61 131-2):
Nominal voltage
12 / 24 V DC (30 V max.)
Nominal current
50 mA (60 mA max.)
Load capability
400 Ω … 1 MΩ