Liebert RCM8DO - Manual (Page 16)

10 • User Manual (7/99)
• Terminal Baud Rate (7)—1200 or 2400 baud selectable.
7 data bits, even parity, 1 stop bit are fixed.
• Common Alarm Relay (Silence/Reset) (8)—The common
alarm relay energizes with any input alarm or received
alarm. If Silence Reset is ON, the relay de-energizes when
the audible alarm is silenced. If OFF, the common alarm
relay remains energized until the input alarm is cleared.
2. Make the following physical connections as applicable.
Refer to Figures 1 and 3.
Power
Connect power to a 120 VAC or 240 VAC source, 50 or
60 Hz. Select the proper input voltage using the voltage
switch located next to the ON/OFF switch.
The RCM8 is shipped with the
backup battery disconnected.
To connect the battery during
installation: plug the 2-wire
connector to P5; then set the
P10 jumper to IN.
Refer to Figure 3.
Be sure to provide proper earth grounding for the unit by
connecting the clearly marked earth grounding conductor to
earth ground on the input power source. Caution: failure
to connect earth grounding conductor may result in
operator injury.
This monitoring device requires an equipment switch or
circuit breaker employed in the building installation as a
circuit-disconnecting device. The disconnecting device shall
be located in close proximity to the monitoring device and
within easy reach of the operator. The disconnecting device
shall be marked as the disconnecting device for the monitor
panel.
Alarm Input Connections
Use 18-22 AWG stranded pair cable for each input channel.
The cable is terminated at the appropriate terminal block
number (1-8). Make connections to the common alarm relay
output if necessary.
Liebert recommends a
maximum cable length of 300
feet with 22 AWG wiring.
Computer or Terminal
The PC or terminal port is a standard EIA-232 (DCE 25-pin
female, 1200 or 2400 baud) connection for a personal
computer, video display terminal connection, short-haul
modems or other device utilizing a serial port.
Liebert recommends a
maximum cable length of 50
feet or use of a short-haul
modem for any device
connected to the PC EIA-232
port.
A PC must be connected to an RCM8 to configure it. You
do not need the PC after the initial configuration unless you
want to change the setup or view alarms on-screen as they
occur. A serial printer can be connected to this port if you
wish to print and retain a hard-copy of alarms.