Powerware 9155 Relay Contacts, Programmable Signal Inputs, The default and programmable settings for the signal inputs are shown in Table

Communication

Relay Contacts

The UPS incorporates a programmable relay output with potential free contacts for remote alarm indications (see Figure 32 on page 53). An additional four relay outputs can be obtained with the X-Slot compatible Relay Interface Card.

W A R N I N G

The relay contacts must not be connected to any utility connected circuits. Reinforced insulation to the utility is required. The relay contacts must have a maximum rating of 30 Vdc/1A and 60 Vdc/2A nominal values.

Programmable Signal Inputs

The UPS incorporates two programmable signal inputs (see Figure 32 on page 53). Use of non-polar (relay) control input is recommended. The pins must be shorted with maximum resistance of 10 ohm in order to activate the specific input.

NOTE See Figure 39 on page 61 for the polarity and verify these connections if polarity control is required.

The default and programmable settings for the signal inputs are shown in Table 11.

Powerware® 9155 UPS (8–15 kVA) User’s Guide S 164201553 Rev D www.powerware.com 63