MPC-6000 / MPC-7000 / RND-2 INSTALLATION, OPERATION AND MAINTENANCE MANUAL
78
APPENDIX-I: OUTPUT FEATURES
Output ON- and OFF- Time Delays
Each output device has a selection for ON time delay and OFF time delay when it is installed
in the configuration. The ON time delay refers to the delay in which the output will activate after
the reception of its activation command. If the ON time delay is set to 0 (default setting), the
output immediately activates.
For output types: Alarm, Pre-Alarm, Trouble, Supervisory, 1
st
Alarm (if applicable), Pre-
discharge (if applicable), Discharge (if applicable), AC Fail (if applicable), the OFF-time delay
refers to the time the output will remain active before it is deactivated. If the OFF time delay is
set to 0 (default setting), the output will remain ON until activation of manual fan restart.
Fan Restart Feature
The Fan Restart feature is implemented when the input device usage “Fan Restart” is selected
and its input group is associated to an output zone that has a device output with “Hold-Thru
Reset” output type selected.
Hold-Thru reset output type acts differently than other output types because its output does not
change state on soft reset command. Hold-Thru Reset is also non-silenceable output type.
When hold-thru output type is selected, the ON-time delay selection refers to the time delay
from the reception of the ON command to the actual activation of the output. When ON-time
delay is set to 0 (default setting), the output immediately activates upon reception of the ON
command. The OFF-time delay selection refers to the time delay from the System Soft Reset
to the actual deactivation of the output. When the OFF-time delay is set to 0 (default setting),
the output will remain ON indefinitely until Global or Independent Fan Restart procedure is
initiated. Global or Independent Fan Restart procedure will immediately deactivate the hold-
thru reset output type regardless of the state of its OFF-time.
Global Fan Restart refers to the fan restart procedure initiated from the panel. Refer to
Additional Operating Procedures on page 25.
Independent Fan Restart refers to the fan restart procedure initiated from a device with fan
restart usage that will deactivate the hold-thru reset associated with its input group.
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