P63: Not Used; P64: Ethernet Port; E1/ E2/ E3/ E4: Transformer Grounds - Emerson Liebert iCOM Training And Service Manual

iCOM
Controls Training and Service Manual
P53: Motorized Ball Valve #1 (MBV-1)
P53-1: 24 VAC Out to MVB-1
P53-2: 24 VAC Out
P53-3: MVB-1 Signal to MP
P54: Motorized Ball Valve #2 (MBV-2)
P54-1: 24 VAC Out to MVB-2
P54-2: 24 VAC Out
P54-3: MVB-2 Signal to MP
P61: Optional Intellislot 12 VDC Power Supply, connect only if optional device is
used.

P63: NOT Used

P64: Ethernet Port

Connects the Large Display to the Control Board using a crossover cable or
connects the Control Board to the switch using a straight patch cable when
networking.
P65: Site Monitoring Signals when the Intellislot is not used
P65-1: +5 VDC to TS 78
P65-2: -5 VDC to TS 77
Must be re-connected to the optional Intellislot for communications when used.
P66: Unit Display Power CAN Bus Connection (Digital Signal).
P67: Temperature/Humidity Assembly Power CAN Bus Connection (Digital
Signal).
TB1: 24 VAC
TB1-1: 24 VAC (T2)
TB1-2: 24 VAC (T3)
TB1-3: 24 VAC (T4)
TB1-4: 24 VAC (T5)

E1/ E2/ E3/ E4: Transformer Grounds

Test Points for DC Voltage on Control Board
TP1: DC Gnd
TP2: DC Gnd
TP3: DC Gnd – A out
TP4: + 3.3 VDC
TP5: + 12 VDC
P53-4: 24 VAC Gnd (E4)
P53-5: No connection
P54-4: 24 VAC Gnd (E4)
P54-5: no connection
TB1-5: E1 (G2)
TB1-6: E2 (G3)
TB1-7: E3 (G4)
TB1-8: E4 (G5)
TP6: + 5 VDC
TP7: + 12 VDC – A out
TP8:
TP9: + 5 VDC – A out
TP10
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