Liebert Universal Monitor - Manual (Page 33)

Wiring and Connections - Optional Expansion Board
25
5.0 W
IRING AND
C
ONNECTIONS
- O
PTIONAL
E
XPANSION
B
OARD
5.1 Wiring Specifications
Input and output connections to the optional Expansion Board may be made in any order—it is not
necessary, for example, to make all input connections before making any output connections. Use cop-
per conductors only for all wiring.
!
CAUTION
Remove all power before installing any wiring to the Expansion Board or changing input or
output connections.
!
WARNING
“RISK OF ELECTRIC SHOCK” - More than one disconnect switch may be required to
de-energize the equipment before servicing.
Table 9 Wiring specifications - optional Expansion Board
Connection Supported Wire Type Maximum Wire Length Rating
Digital
Input
18-22 AWG Stranded & Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
750 ft. (225m)
Dry Contact
(24VDC,
10 mA)
Digital
Output
18-22 AWG Stranded & Unshielded
18 AWG* (recommended)
Non Plenum - Belden 9740
Plenum - Belden 89740
18 AWG*
(recommended)
20 AWG 22 AWG
240VAC,
2A max. @3A 50 ft. (15m)
@2A 100 ft. (30m)
@1A 200 ft. (60m)
@3A 40 ft. (12m)
@2A 60 ft. (18m)
@1A 100 ft. (30m)
@3A 25 ft. (7m)
@2A 35 ft. (10m)
@1A 75 ft. (23m)
Communication
EIA485
18-22 AWG Stranded & Shielded
22 AWG* (recommended)
Non Plenum - Belden 9461
Plenum - Belden 88761
3000 ft. (900m) N/A
24VAC Power
Connection
(TB1)
18-22 AWG Stranded & Shielded
18 AWG* (recommended)
Non Plenum - Belden 8770
Plenum - Belden 88770
150 ft. (45m)
24VAC
@0.6A
* Recommended