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RCM 202-AB
RCM 202-AB
19
6.6
Digital outputs
ATTENTION
External signal current circuits must be secondary current circuits if the
RCM 202-AB is integrated in a monitoring system.
The digital outputs are not short-circuit proof.
Cables that are longer than 30 m must be installed shielded.
The RCM 202-AB has two transistor switching outputs. These digital outputs are elec-
trically isolated from the evaluation electronics via optocouplers.
The digital outputs switch direct current or alternating current loads.
The digital outputs switch loads independently of the polarity of the supply volt-
age.
6.7
Analog outputs (interfaces 4
…
20
mA)
The RCM 202-AB has two analogue outputs (interfaces 4
…
20
mA). The analogue
outputs output the effective value of the measured total current. Both analogue out-
puts require a separate power supply (DC 12 … 24
V). In the configuration menu of
the RCM 202-AB, the measuring range (total current) can be scaled. In systems with
low total currents, this makes it possible for the measured total current to be evaluated
in a more precise manner. The message “overflow” is displayed when the set meas-
uring range (total current) is exceeded and can be called up via Modbus.
Set value “Factor 4
…
20
mA”:
5
A
10
A
15
A
20
A
Measured total current
Output value of the analog output
0.00
A 4.0
mA 4.0
mA 4.0
mA 4.0
mA
2.45
A
11.8
mA
7.9
mA
6.6
mA
6.0
mA
2.50
A 12.0
mA 8.0
mA 6.7
mA 6.0
mA
2.60
A
12.3
mA
8.2
mA
6.8
mA
6.1
mA
5
A 20
mA 12
mA 9.3
mA 8.0
mA
10
A
Error
20.0
mA
14.7
mA
12.0
mA
14
A
Error 18.9
mA 15.2
mA
15
A
20.0
mA
16.0
mA
16
A
Error 16.8
mA
20
A
20.0
mA
Tab. 2:
Example of the output value of the analog output depending on the set factors
and measures total current
Summary of Contents for RCM 202-AB
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