Bender LINETRAXX RCM410R-1 - Relay

RCM410R-x_D00403_01_M_XXEN/09.2020 15
LINETRAXX® RCM410R-1/-2
A twisted-pair, shielded cable must be used as bus cable. For example, cable type J-Y(St)Y
nx2x0.8 mm² is suitable. The shield must be connected to PE at one end.
i
If there are more than 16 bus devices, the interface must be designed to be shockproof,
because the maximum permissible total leakage current of 0.5 mA is exceeded.
Termination
The bus cable must be terminated at both ends with resistors (120 Ω, < 0.1 W). The terminating
resistors are connected in parallel to the terminals A and B.
3.2.2.4 Relay
i
Caution! High contact currents damage the hard gold plating of the relay contacts.
Damaged contacts prevent the relay from switching correctly at low contact currents.
The terminals 11,14,12 are relay outputs of the measuring sensor. The following settings can be
made via the interface:
Function State Description
Test on | o This parameter determines whether the relay is actuated during a test
Operating mode N/O principle | N/C principle This parameter determines the operating mode of the relay.
N/O principle = coil is energised during alarm state
N/C principle = coil is energised during normal operation
Main alarm on | o The relay switches if the residual operating current has been exceeded
Prewarning on | o The relay switches if the prewarning threshold has been exceeded
Device error on | o The relay switches if a device error exists
CT connection fault on | o The relay switches if a measuring current transformer connection fault exists
B
A
B
A
B
A
RS-485
B
A
max. 1 m
max. 1200 m
B
A
RS-485
120 Ω
> 0.1 W
S2
L1L2 L3 N
Verbraucher
Load
S1
A1
U
S
~/+ ~/–
A2
RS-485
B
A
–
(+24 V) optional
+
11
14
12
S1 (k)
S2 (l)