MGE UPS Systems STS 600A - Manual (Page 33)

Installation and User Manual
2.3.5 Connection of the Relay Communication Card
The relay communications card contains six programmable dry contact outputs and two programmable dry contact
inputs, and is standard on the Epsilon STS™. The inputs and outputs are factory programmed according to
functions listed in Table 2-2.
Table 2-2: Relay Contacts (communications card)
Inputs Factory Setting Options (available on both contacts)
- Reset Memorized Faults.
1.A - Select Source S1 as Preferred. - Select Source S1as Preferred.
- Select Source S2 as Preferred.
- Enable Automatic Retransfer.
1.B - Select Source S2 as Preferred. - Disable Automatic Retransfer.
- Enable Transfers.
- Disable Transfers.
Note: 1. Power sources connected to card must be equipped with protection devices with a maximum breaking capacity of 2A.
2. Connections must be form “C” Dry Contacts.
Outputs Factory Setting Options (available on all contacts)
1.1 - Power supplied to Load. - Power supplied to Load.
- Summary Alarm (source or STS fault).
1.2 - Summary Alarm - STS Fault.
(source or STS fault). - Source S1 Out-of-Tolerance.
1.3 - STS Fault. - Source S2 Out-of-Tolerance.
- Sources Out-of-Phase.
1.4 - Overload Condition. - Source S1 Active.
- Source S2 Active.
1.5 - Source S1 - Source S1 is Preferred Source.
Out-of-Tolerance. - Automatic Transfer Disabled.
1.6 - Source S2 - Overload Condition.
Out-of-Tolerance.
The indications 1.X become 2.X for a second optional card of the same type.
Installation 2 — 5 86-504004-00 B03