889-3809-00
Model 2018 Operations Manual Rev Apr 2020 Page
6
of 41
of Programming Cards or only one type. When configured to select only one type, the
PC AJAR
LED will
illuminate if the inserted Program Card does not match the selected type.
See Section
3.5
for programming card connector pin assignments.
2.3.1
CHANNEL COMPATIBILITY (PERMISSIVES)
The monitor requires programming action to provide compatibility between channels. Programming is
accomplished through the use of diodes on an interchangeable Programming Card. The diodes are logically
labeled for easy identification by channel pairs. An installed functioning diode defines a pair of channels as
conflicting. Removing a diode (cutting or unsoldering) defines a pair of channels as permissive or compatible.
2.3.2
YELLOW DISABLE
The Programming Card has sixteen or eighteen pairs of 1.09 mm (0.043 in) diameter holes for programming
jumpers. One hole of each pair is connected to the Yellow Inhibit Common pin (pin #28). The sixteen or eighteen
jumper-hole pairs are logically labeled for easy identification of the channel numbers. A soldered wire jumper in a
jumper-hole pair disables short or skipped yellow monitoring, removes the yellow from the multiple indication test
for that channel, and removes the yellow from all conflict tests.
2.4
FEATURES
2.4.1
MONITOR POWER UP / POWER RECOVERY
When the AC+ input voltage exceeds 103V
RMS
(98V
RMS
if the factory option for Low AC Power Thresholds is
active) on power up or during power recovery, the monitor will begin a Power Up sequence.
On power up, the Output Relay contacts close.
The Stop Timing output becomes inactive.
The AC POWER indicator flashes at a 4 Hz rate.
A ten second max power up timer starts.
A four second delay is timed.
The monitor begins to count WATCHDOG TIMER transitions.
In the 210 mode of operation, if a transition occurs before the max power up timer
reaches ten seconds, the Output relay contacts open and all monitoring functions become
active.
In the 2010 mode of operation, if five transitions are counted before the max power up
timer reaches ten seconds, the Output relay contacts open and all monitoring functions
become active.
If the max power up timer reaches ten seconds, the Stop Timing output activates and a Watchdog
Timer fault is generated and the
WDT ERROR
indicator turns on.
2.4.2
MONITOR POWER FAILURE
The monitor responds to a Power Failure by entering a non-latching flash state. The monitor responds to a Power
Failure whether it is the result of over-current protection device operation, failure of the monitor power supply,
absence of proper operating AC Line voltage, or absence of proper operating AC Line frequency as defined below.
The AC+ input is considered to be ON if the voltage level is greater than 103V
RMS AND
the line frequency is
between 57.5 Hz and 62.5 Hz. It is considered to be OFF if the voltage level drops to less than 98V
RMS
or the line
frequency becomes less than 56.0 Hz or greater than 64.0 Hz. The hysteresis from the OFF state to the ON state or
vice versa is at least 3V
RMS
and the line frequency hysteresis is at least 1.0 Hz. If the factory option for Low AC
Power Thresholds is active, the AC+ input is considered to be ON if the voltage level is greater than 98V
RMS
and it
is considered to be OFF if the voltage level drops to less than 92V
RMS
.
The monitor responds to Power Failure as follows:
If the AC+ input is OFF for 400 milliseconds or less, the monitor continues to operate as though the
AC+ input had remained ON. The Fault relay contacts do not transfer to the fault condition during
this interval.
If the AC+ input is OFF for 450 milliseconds or more, the monitor transfers the Fault relay contacts to
the fault condition. The time interval from the start of the AC+ input being OFF and the transfer of
the Fault relay to the Fault state does not exceed 475 milliseconds. The relay maintains this state for
the duration of the Power Failure and will enter the Power Recovery mode when power returns.
