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Section 1: INTRODUCTION
The Liebert RCM8CE and RCM8DO Remote Contact Monitors
annunciate alarms by monitoring eight contact-closure points,
each point wired directly to the RCM8.
Contact Liebert Environmental
Service & Support at
800-543-2778 regarding
installation, operation, or
warranty issues.
When the RCM8 receives an alarm signal, a piezoelectric siren
sounds and the LED illuminates for the corresponding contact
point (1 through 8). A text interface to a video terminal or PC
emulating a terminal session is used to configure the operating
parameters, and can remain connected to receive user-
programmed alarms messages.
In addition to monitoring alarm signals from locally-connected
equipment, the RCM8 can also dial out via modem to: remote
computer; another RCM8 acting as a repeater; numeric pager; or
alphanumeric pager. The RCM8DO features 8 additional
contact-closure outputs that mimic the state of the alarm LEDs.
Up to four RCM8 units can be connected in a local, multi-point
monitoring configuration. This gives added flexibility to monitor
up to 32 contact points. The RCM8 also communicates with the
Liebert SiteScan centralized monitoring system.
Specifications
Electrical Specifications:
Installation Category (Overvoltage Category): II
Transient Overvoltage: 2500 Volts Maximum
Voltage: 120 VAC/240 VAC, +/-10% of nominal
Current: 0.07/0.04 Amperes
Power: 8.5 VA
Phase: 1
Frequency: 50/60 Hz
Battery Backup: 1-hour nominal
Communications:
2 standard 25-pin, EIA-232 modem and terminal
Proprietary EIA-422 protocol to Liebert SiteScan system
Proprietary EIA-485 protocol to multiple RCM8 units
Common alarm output, Form-C dry-contacts
Piezo-electric alarm: 100 dB at 30 cm, 2900 +/-500 Hz
Liebert RCM8 • 1