Eaton 91PS User And Installation Manual

Also see for 91PS: Safety and installation quick guide Safety and installation quick guide User and installation guide User and installation guide

Contents

ECAN provides means for communication between the UPS’s in a parallelsystem. When this network fails, the system continues to share load and protectthe load.Bypass Pull-ChainBypass Pull-Chain is an open collector signal that goes low when the bypassstatic switch of any UPS is online. When External CAN (ECAN) is down, thepull-chain is low and the UPS is online, the UPS locks to and transfers to thebypass mode. Service can manually short this signal in some rare failure modesto force a system transfer to bypass.Signal Inputs ActionsEach UPS has a maximum of 7 signal inputs, 5 native and one in each MiniSlotwhen using a suitable connectivity device. These inputs can be configured withaction items. The following action items affect all the UPSs in the system. Whenan action item is active on a UPS and the MOB is closed, the action item istransmitted on the ECAN to all the UPSs. All the UPSs react in the samemanner as if the action item was active on that UPS.Wiring the EPO switch in parallelIt is recommended to use separate EPO circuits for each parallel unit.5.8.3 Installing bypass control wiring1. During the installation, follow all the safety instructions given in thisdocument.2. Terminal blocks TB2, TB3 and TB4 are for external parallel control signals.3. The Phoenix Contact FRONT-MSTB 2,5/2-STF-5,08 and 2,6/4-SFT-5,08plug components are used for cable wiring termination.Eaton 91PS/93PS UPS 8-10 kW User's and installation guide© Eaton Corporation plc 2018. All rights reserved. Revision: 003 Document ID: P-164000672 59 (102)