Emerson Liebert Static Transfer Switch - Manual (Page 47)

Installation Drawings
39
Figure 26 Control wiring for comms board
EXTERNAL MODEM
SEE DETAIL A
“NO CUSTOMER
CONNECTION”
PS213003
Rev. 02
LIEBERT
SITESCAN
SEE DETAIL B
“NO CUSTOMER
CONNECTION”
J81
J1A
COMMS BOARD
02-810015-XX
TB55 TB56 TB51
SEE NOTE 2
CUSTOMER-SUPPLIED
INTERCONNECTING CABLE
TO EXTERNAL MODEM
CUSTOMER-SUPPLIED
INTERCONNECTING CABLE
TO LIEBERT SITESCAN
SEE NOTES 1 & 2
DETAIL A
9 1 2 3 4 5 6 7 8
J81
RI DS
R
RX TX DT
R
GN
D
DC
D
RT
S
CT
S
DETAIL B
TB 55
1 2 3
NOTES
1. Maximum cable length 1000 feet (300 meters) with
twisted pair cable #22 AWG 300V minimum.
2. Signal voltage 5VDC, current 10mA.
3. Refer to installation, operation and maintenance
manual for configuring the COMMS board.
4. All control wiring (by others) must be run separate from
power wiring. Control wiring runs should not be
combined in the same conduit.
5. Refer to control connection location diagram of static
transfer switch for location of COMMS board.
6. All wiring must be in accordance with national and
local electrical codes.