Installation and connection
27
TGH1394en/05.2007
Legend to wiring diagram
* The external TEST/RESET buttons of several devices must not be connected to
one another.
A1, A2 Supply voltage U
S
(see ordering details),
6 A fuse recommended; two-pole fuses should be used on IT
systems.
k1, l …
k12, l
Connection of measuring current transformers 1…12.
A, B BMS bus (RS-485 interface with BMS protocol)
R, R/T External RESET button (N/O contact)*
T, R/T External TEST button (N/O contact)*
C11, C12,
C14
Common alarm relay K1: Alarm 1, common alarm for alarm
or device error.
C21, C22,
C24
Common alarm relay K2: Alarm 2, common alarm for alarm
or device error.
R
on/off
Activate or deactivate the BMS bus terminating resistor
(120 Ω) ).
11, 14 …
121, 124
Alarm relay per channel: One N/O contact per channel
(e.g. N/O contacts 11,14 for channel 1).
W Measuring current transformer
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