25-75 kW
User's and Installation Guide
53
•RelayCard-MS
Two types of interfaces via a DB9 connector are available with this card. Dry contact mode provides a simple
way to transmit UPS information to an alarm system, PLC, or computer system via dry relay contacts. By
default the transmitted information is load powered, load on bypass, load on battery, load on utility, battery
fault, and low battery. RS232 mode provides an RS232 interface for connection to a PC or to a UPS Control
display unit. Jumpers are used to select the interface (contacts or RS232).
Figure 5-4: Relay Card-MS
•NetworkandMODBUSCard-MS
Provides remote monitoring through a Web browser interface, e-mail, and a network management system
(NMS) using SNMP and connects to a twisted-pair Ethernet (10/100BaseT) network. The card also provides
direct integration of UPS information (meters and status) to a Building Management System (BMS) using the
Modbus RTU protocol.
Figure5-5:NetworkandMODBUSCard-MS
•IndustrialRelayCard-MS
The Mini-Slot Industrial Relay Card provides a way of connecting the 93PR to industrial and electrical
monitoring systems. It also enables a wide range of control applications by allowing up to 250 volts and 5
Amperes through its 5 relay connections. By connecting wires to the corresponding places in its terminal
blocks you can choose Normally Open or Normally Closed setup for each output.
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