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2. Installation
Connection to the RS 232 communication port
1 - Connect the RS 232 23 communications
cable to the serial port on the computer.
2 - Connect the other end of the
communications cable 23 to the RS 232 5
communications port on the UPS.
The UPS can now communicate with various
MGE UPS SYSTEMS power management
application software. Please note that the
configuration software is included with
Personal Solution Pac for Windows.
23
5
Connection to the communication port by relays 2
◗ Pin 1, 2: not used,
◗ Pin 3: Remote Power Off signal (5 to 27 V DC, 10 mA max),
◗ Pin 4: Operation on mains (not on battery),
◗ Pin 5: User common,
◗ Pin 6: Operation on automatic by-pass,
◗ Pin 7: Low battery,
◗ Pin 8: Load protected,
◗ Pin 9: Operation on battery.
n.o.: contact normally open.
n.c.: contact normally closed.
When the status is active, the contact between the common (Pin 5) and the relevant information pin is closed.
Output relays specifications
◗ Voltage: 48 V DC max,
◗ Current: 2 A max,
◗ Power: 62,5 VA, 30 W.
Example: for 48 V DC, Imax=625 mA
2.4 Communication ports
Comet EX RT provides 3 communication methods that can be used simultaneously:
◗ The COM port provides RS232 communications using MGE UPS SYSTEMS SHUT protocol. Compatible with most power
management software applications available into the enclosed Solution Pac CD-Rom.
◗ The output contact port is used for basic signaling or for protection of IT systems like IBM iSeries (formerly AS400) and
more.
◗ The slot is compatible with any MGE UPS SYSTEMS communication card (check www.mgeups.com web site for the
complete list of compatible cards).
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