UPS System Installation
Eaton 93PM UPS (20–50 kW, 480V Four Wire – 50 kW Frame) Installation and Operation Manual P-164000540—Rev 4 www.eaton.com/powerquality 4-25
Table 4-5. External Parallel CAN and Pull Chain Connections
External Parallel Terminal Block Name Description
1 Pull Chain
External parallel pull chain connections between UPSs.
2 Pull Chain Ground
3 CAN H In
External parallel CAN input connections from previous UPS.4CAN L In
5 Ground
6 Earth Not Used
7 CAN H Out
External parallel CAN output connections to next UPS.8 CAN L Out
9 Ground
10 Earth Not Used
Table 4-6. External Parallel CAN and Pull Chain Terminal Block Terminations
Terminal Function
Recommended
Minimum Wire Size
Size of Pressure
Termination
Tightening Torque
Nm (lb in)
Type Screw Comments
CAN
#18 AWG
#26–#16 0.4 (3.5) - 0.8 (7.1) Slotted Use shielded twisted-pair wires with drain wire for
each input and return or common.
Strip wire insulation
back 10 millimeters to wire terminal blocks.
Pull Chain #26–#16 0.4 (3.5) - 0.8 (7.1) Slotted Use twisted-pair wires for each input and return or
common.
Strip wire insulation back 10 millimeters to
wire terminal blocks.
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