Function; Device Features; Functional Description - Bender LINETRAXX SmartDetect RCMS410 Manual

Function

2 Function
2.1

Device features

• DC, AC, and pulsed-DC sensitive residual-current monitor type A, type F, type B and type
B+ according to IEC 62020-1 (depending on the connected measuring-current transfor-
mers and activated function modules)
• Four channels
• Functions for each channel: overcurrent (standard), undercurrent, or window function
(out-of-range-values)
• One digital input, one digital input/output and one multifunctional digital/analogue
output
• r.m.s. value measurement
• Residual operating current
– Type A: 6 mA...30 A
– Type F: 6 mA...30 A (15 Hz...20 kHz)
– Type B/type B+: 10 mA...10 A (only with function module "AC/DC
sensitive measuring and evaluation of values")
• Separate evaluation of AC/DC (RMS), AC, and DC
• Prewarning: 50...100 % of the residual operating current
• Supply voltage 24 V DC
• Alarm-LED for each channel
• Device status and Alarm LED
• Fault-memory behaviour selectable
• RS-485 with Modbus RTU
• NFC interface for device parameter setting via Bender Connect App with the device en-
gerised or de-energised
• Continuous CT-connection monitoring
• Expanded functions available by enabling these function modules:
– AC/DC sensitive measuring and evaluation of values
– Harmonic analysis (FFT)
– Connection of Type A external transformers
– History memory (in preparation)
2.2

Functional description

Once the supply voltage U
delay t begins. During the the start-up delay t no alarms are reported. Residual-current measure-
ment and evaluation is carried out via an external measuring-current transformer. If the measured
value exceeds or falls below the specified value for the prewarning and/or the residual operating
current, the response delay t
Alternatively, every measuring channel can also be configured as digital input. In this event, the
status of the digital input is output via the interfaces.
After t has elapsed, a prewarning or a main alarm is given via the corresponding outputs and in-
on
terfaces, and the corresponding alarm LED lights up. If the value falls below the release value be-
10 RCMS410_D00424_00_M_XXEN / 09.2022
has been applied and the recovery time t
s
starts.
on
has elapsed, the start-up
b