Alpha Technologies CFR 1500, CFR 2000, CFR 2500, CFR 3000 - Manual (Page 19)

RS-232 Connector:
The connection/specifications for the RS-232 serial port vary depending on the
installed interface device (i.e., SID or IID option).
RS-232 connection for the standard CFR-UPS (with SID or internal IID display)
The standard CFR-UPS configuration with SID or internal IID connects to a
computer or terminal using a standard straight-through RS-232 cable.
2. FEATURES
2.5 Communication / Interface Options, continued
12
Fig. 6
CFR-UPS RS-232 Connector
RS-232 cable to computer or terminal
Use standard straight through type
Internal CFR connections
*IID Only (Not used with SID)
1
2 Tx
3 Rx
4
5 Gnd
6
7 RTS*
8CTS*
9
Communication Settings with SID:
Baud Rate: 1200
Parity: None
Stop Bits: One
Data Bits: 8
Handshaking: XON / OFF
Communication Settings with IID:
Baud Rate: 300 to 9600
Parity: None, Even, or Odd
Stop Bits: 1 or 2
Data Bits: 7 or 8
Handshaking: RTS/CTS
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
The electronic components used in the UPS require no maintenance. If the unit fails to
perform a specific function, refer to the troubleshooting guide. The guide lists typical
symptoms, causes and solutions that apply to the UPS, starting with the most obvious
and working systematically through the unit.
By establishing a routine maintenance program and following the guidelines
contained in this manual, your Alpha CFR will continue to provide years of trouble-free
service.
The maintenance free batteries used in the UPS will be affected bymany variables
including operating temperatures, number of discharges over the life of the battery,
charging characteristics, and low voltage cell cutoff. The Alpha CFR complies with all
factory recommendations for charging and discharging batteries to ensure optimum
performance and the longest possible battery life.
During normal operation, the UPS batteries will tend to increase in capacity over
the first three to twelve months of service. There can be as much as a 20% increase in
available backup power after the first ten to fifteen battery discharges. Once the
batteries reach this peak, they will slowly begin to lose capacity until, eventually, they
will be unable to provide the required backup power.
6. MAINTENANCE
53
Fig. 34
Typical UPS Battery
Note: Battery
terminals vary in size
and shape.
6.1 CFR Maintenance
6.2 Battery Maintenance