Emerson Nelson CM-1, Manual

Page: 11 / 24

www.nelsonheaters.com
GA-2129 Rev. 11
Sheet 11 of 22
Jul. 2018
ALARM SILENCE TIME-OUT
This establishes the amount of time the acknowledged alarm is silenced before re-alarm. If an alarm is
acknowledged (which silences the remote alarm relay), and the voltage problem is not corrected, the
system will re-activate the remote alarm relay.
Figure 9
SCAN SPEED
This is a customer preference option. Recommended practice is to leave this Switch in ON position for
active fast scan (option switch #16), for installation and set up. Flip Switch OFF for slow scan (option
switch #16), during normal operation.
Figure 10
ALARM RESET AUTO/MANUAL
In auto reset mode, (Switch in ON position): The alarm status and remote alarm will clear automatically
when a circuit fault clears. In manual mode, (Switch in OFF position): When a fault is cleared, both the
scanner display and the remote output will remain in alarm until the reset button is pressed.
Figure 11
Note: After any change in the system program, press the “Alarm Reset” button on the front of the
enclosure, this will reset all options and finalize any changes that have been made.
Alarm Silence Time-out
z –
Auto Reset
z –
Scan Speed