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Pioneer Gold 3.00 Controller Technical Guide
Lock-Out Alarms
The lock-out alarms will not automatically reset themselves once
the fault condition clears. For these alarms to clear, one of the
following conditions must be met:
1. Controller is power cycled.
2. Fault condition is corrected and the compressor call
is removed.
3. BACnet
®
“Unit Lockout Remote Reset” (point BV:46)
is set true.
Auxiliary Input Alarm
The Auxiliary Input Alarm will enable if the compressor has
been operational for the minimum on time and a dry contact has
been made between the “AUX” and “COM” quick disconnect
terminals for 10 seconds. This alarm will disable the compressor
but will allow the supply fan to operate.
Condensate Overow Alarm
is less than 100k ohm for more than 30 seconds. This alarm will
disable both the compressor and the supply fan.
High Discharge Pressure Alarm
The High Discharge Pressure Alarm will enable if the high
pressure switch opens. This alarm will immediately disable the
compressor but will continue to allow the supply fan to operate.
The High Discharge Pressure Alarm will remain active for a
minimum of 15 minutes. The compressor will restart after 15
minutes if the high pressure switch is closed. A second High
Discharge Pressure alarm within two hours will cause a soft
lockout.
DI1 Compressor Interlock Alarm
The DI1 Compressor Interlock Alarm will trigger if the input
a compressor call. If the compressor is running, the alarm will
case, once the alarm has been triggered, it can be cleared once
the compressor is removed.
DI2 Compressor Interlock Alarm
The DI2 Compressor Interlock Alarm will trigger if the input
a compressor call. If the compressor is running, the alarm will
case, once the alarm has been triggered, it can be cleared once
the compressor is removed.
Leaving Water Temperature Alarm
The Leaving Water Temperature Alarm will trigger if the
leaving water temperature drops below the freeze protection
the Pioneer Gold interface, determining what temperature will
trigger the alarm and what temperature will release the alarm.
This alarm will disable the compressor but will allow operation
of the supply fan. Acceptable water temperature range is
-10ºF-120°F. The alarm is released only if 10 minutes has expired
and the leaving water temperature has risen 5°F above the freeze
protection temperature. If the leaving water temperature drops
below the freeze protection temperature again within two hours,
then the alarm will be active until the leaving water temperature
has risen 5°F above the freeze protection temperature and either
the unit is power cycled, the Y call is removed, or a reset is sent
from the BMS (soft lockout).
Liquid Line Temperature Alarm
The Liquid Line Temperature Alarm will trigger if the
refrigeration line temperature drops below the freeze protection
the Pioneer Gold interface, determining what temperature will
trigger the alarm and what temperature will release the alarm.
This alarm will disable the compressor but will allow operation
of the supply fan. Acceptable water temperature range is
-10ºF-120°F. The alarm is released only if 10 minutes has
expired and the refrigeration line temperature has risen 5°F
above the freeze protection temperature. If the refrigeration
line temperature drops below the freeze protection temperature
again within two hours, then the alarm will be active until the
refrigeration line temperature has risen 5°F above the freeze
protection temperature and either the unit is power cycled, the
Y call is removed, or a reset is sent from the BMS (soft lockout).
Low Suction Pressure Alarm
The Low Suction Pressure Alarm will enable if the low pressure
switch opens for more than 10 seconds. This alarm will disable
if both of these conditions occur: 15 minutes has expired and the
low pressure switch has closed. The compressor will not start
if the switch is open. If the alarm is enabled again within two
hours, there will be a hard lockout and require a power cycle to
reset. Removal of the compressor call will not reset the alarm
while in hard lock out.
There will be a delay of 30 seconds after the compressor starts
before the alarm will enable.
SEQUENCE OF OPERATION
Lock-Out Alarms
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