Bender LINETRAXX RCM410R-1 - Measuring Current Transformer Connection; RS-485 Interface

14 RCM410R-x_D00403_01_M_XXEN/09.2020
Mounting and connection
3.2.2.2 Measuring current transformer connection
i
Ensure that the measuring current transformers are connected correctly. Terminal S1
must be connected to terminal "S1" (k) of the measuring current transformer. Terminal
S2 must be connected to terminal "S2" (l) of the measuring current transformer.
i
For further information on the connection of measuring current transformers, refer to
the corresponding manuals of the measuring current transformers. The installation in-
structions specified there must be observed.
Suitable measuring current transformers
Series CTAC Series W Series WF Series WR Series WS
CTAC20(/01) W20 WF170-1/-2 WR70x175S WS20x30
CTAC35(/01) W35 WF250-1/-2 WR115x305S WS50x80
CTAC60(/01) W60 WF500-1/-2 WR150x350S WS80x120
CTAC120(/01) W120 WF800-1/-2 WR200x500S WS20x30-8000
CTAC210(/01) W210 WF1200-1/-2 WR70x175SP WS50x80-8000
W20-8000 WR115x305SP
W35-8000 WR150x350SP
W60-8000 WR200x500SP
i
Attention! The use of WF series measuring current transformers is only possible with
disabled CT connection monitoring at RCM410R-x. CT connection monitoring is disabled
via Modbus using register 32111. After disabling, a CT connection error is only signaled
by the LED on the RCC420 of the WF measuring current transformer.
3.2.2.3 RS-485 interface
Specification
The RS-485 specification restricts the cable length to 1200m and requires a daisy chain connec-
tion.
S2 S1
CT
PE
L1
L2
L3
N
S1(k) S2(l)
S1
S2
S2(l)
S1(k)
RCM410R... Measuring current transformer