Model MMU-1600G Series Op Man - Ver 1.07.23 - Rev 20151026DL
Page 18 of 58
Feature Interactions:
None
2.5.9 +24 Volt Monitor I
Configuration:
The 24V Latch jumper on the Program Card determines whether this fault is a latched fault. The testing
default for this feature is determined by the jumper installed on the program card. Typically no jumper is installed during
automated testing.
Test Preformed:
A voltage greater than +22V
DC
applied to the +24 Volt Monitor I input is recognized as adequate for proper
operation. A voltage of less than +18V
DC
is recognized as inadequate for proper operation. When the +24 Volt Monitor I
input is detected as inadequate for more than 175 milliseconds, the monitor generates a fault. A +24V Monitor I failure
during the programmed Minimum Flash time or during a monitor Power Failure shall not cause a fault.
Fault Action:
The monitor transfers the Output relay contacts to the fault condition (continuity between the Normally Open
and Common contacts), illuminates the
24V-1
indicator on the front panel, and sets the +24 Volt Monitor I bit (bit 58) of the
Type 129 Frame to 1. The Signal Sequence log and the Prior Faults log will record this fault.
Resetting the Fault:
Restoration of proper voltage to the +24V Monitor I input will reset this fault. Once tripped to the fault
state, the minimum flash time must time before normal operation can be restored. The Reset log will record the resetting of
this fault.
If the 24V Latch jumper is installed on the Program Card, the monitor remains in this fault condition until the unit is reset by
the activation of the front panel reset pushbutton or the activation of the reset input. Power loss or power interruption will
not reset this fault.
Modifying Inputs:
+24V Monitor Inhibit
: +24V Monitor I failures will be ignored when this input is below 8V
DC
.
Feature Interactions:
None
2.5.10 +24 Volt Monitor II
Configuration:
The 24V Latch jumper on the Program Card determines whether this fault is a latched fault. The testing
default for this feature is determined by the jumper installed on the program card. Typically no jumper is installed during
automated testing.
Test Preformed:
A voltage greater than +22V
DC
applied to the +24 Volt Monitor II input is recognized as adequate for
proper operation. A voltage of less than +18V
DC
is recognized as inadequate for proper operation. When the +24 Volt
Monitor II input is detected as inadequate for more than 175 milliseconds, the monitor generates a fault. A +24V Monitor II
failure during the programmed Minimum Flash time or during a monitor Power Failure shall not cause a fault.
Fault Action:
The monitor transfers the Output relay contacts to the fault condition (continuity between the Normally Open
and Common contacts), illuminates the
24V-2
indicator on the front panel, and sets the +24 Volt Monitor II bit (bit 59) of the
Type 129 Frame to 1. The Signal Sequence log and the Prior Faults log will record this fault.
Resetting the Fault:
Restoration of proper voltage to the +24V Monitor II input will reset this fault. Once tripped to the
fault state, the minimum flash time must time before normal operation can be restored. The Reset log will record the
resetting of this fault.
If the 24V Latch jumper is installed on the Program Card, the monitor remains in this fault condition until the unit is reset by
the activation of the front panel reset pushbutton or the activation of the reset input. Power loss or power interruption will
not reset this fault.
Modifying Inputs:
+24V Monitor Inhibit
: +24V Monitor II failures will be ignored when this input is below 8V
DC
.
Feature Interactions:
24V-2 To 12VDC
: When this feature is enabled the voltage thresholds used are changed from greater than +22V
DC
being
valid to greater than +11.5V
DC
and a voltage of less than +18V
DC
being invalid to less than +10.75V
DC
.
2.5.11 Controller Voltage Monitor
Configuration:
The CVM Latch jumper on the Program Card determines whether this fault is a latched fault. The testing
default for this feature is determined by the jumper installed on the program card. Typically no jumper is installed during
automated testing.
Test Preformed:
A voltage of less than 8V
DC
is recognized as proper operation. A voltage greater than 16V
DC
is recognized
as improper operation. When the CVM input is detected as improper for more than 175 milliseconds, the monitor generates a
fault. A CVM failure during the programmed Minimum Flash time or during a monitor Power Failure shall not cause a fault.
