4.4 Site preparations .......................................................... 37
4.4.1 Environmental considerations .............................. 37
4.4.2 Installation considerations ................................... 38
4.4.3 UPS system power wiring preparations .................. 42
4.5 Unpack and unload the UPS ........................................... 55
5 UPS system installation............................................................ 60
5.1 About UPS system installation ......................................... 60
5.2 Steps to install the UPS .................................................. 61
5.3 Battery system installation .............................................. 63
5.3.1 Battery trip wiring............................................... 64
5.4 Installing UPS external battery cabinet and battery power
cabling........................................................................ 65
5.5 Install a remote EPO switch............................................. 66
5.6 Installing interface connections ........................................ 67
5.6.1 Installing customer input signals interface ............... 67
5.6.2 Battery breaker wiring interface ............................ 68
5.6.3 Relay output interface connections........................ 68
5.6.4 Industrial Relay Card interface connections............. 68
5.6.5 MiniSlot interface connections .............................. 69
5.6.6 Installing signal interface connections in a parallel
system ............................................................ 69
5.7 Wiring parallel 91PS/93PS UPS systems ........................... 70
5.7.1 Power wiring overview ........................................ 70
5.7.2 Control signals overview ..................................... 73
5.7.3 Installing parallel control wiring ............................. 73
5.8 UPS system interface wiring preparation ............................ 75
6 Communication interfaces........................................................ 77
6.1 About communication interfaces....................................... 77
6.2 Native signal terminals ................................................... 78
6.3 MiniSlot cards .............................................................. 79
6.4 Intelligent Power Software .............................................. 81
6.5 Signal input monitoring................................................... 82
6.6 General purpose relay contact ......................................... 82
6.7 Configuring relays ......................................................... 83
7 UPS operating instructions....................................................... 88
7.1 How to operate the UPS ................................................. 88
7.2 UPS controls and indicators ............................................ 88
7.2.1 Control panel .................................................... 88
7.2.2 Status indicators................................................ 89
7.2.3 Color LED indicators .......................................... 90
7.2.4 System events .................................................. 91
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 4 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide