345
APPENDIX J — FACTORY-SUPPLIED PUMPS (cont)
Fig. T — Administrative Settings
Sequence of Operation
The sequence of operation is covered in the steps below.
Pumps will start with a closed contact from the pump relay
across the “DIG IN 1” input on the pump control board. This
contact is wired to all pumps in parallel. At start the pumps will
go to 50% of max speed.
After 30s of run time, the pump control will calculate the num-
ber of pumps and speed required to meet the required flowrate
and head. Only pumps in “Auto” mode will be used in this op-
eration. All pumps may not be used by the pump controller de-
pending on flow requirements and most efficient operating
point.
If all pumps are not running, but in “Auto” mode, the controller
will sequence the pumps for even runtime. The pump rotation
time is adjustable in the pump controller.
If a pump fails or one is set to the “Off” mode, another pump
will start if available. If additional pump is not available, the
speed of remaining pumps will be increased to meet the load.
Alarms
The following alarms may present at the pump display. The
alarm descriptions are not communicated to the chiller control
so they must be checked at the pump system. The chiller moni-
tors the alarm relay on each pump. If all of the pumps are in
alarm, not functional, the chiller will shut down and show a
“pump failure” alarm. See Tables A and B.
Table A — Alarms
BIT POSITION
NAME
ALARM DESCRIPTION
0
VFD Over temperature
The temperature of a VFD or motor component is exceeding the thermal alarm limit. Turn off the power to the pump and ver-
ify that the motor, fan, and VFD cooling is functioning correctly. Verify that the pump is not overloaded. Wait until hot compo-
nents have cooled before returning to service and if the alarm persists after powering up, contact an Armstrong Technical
Service representative.
1
VFD Over Current
The VFD has detected current exceeding the safe limit. Turn the pump off. (If there is a discharge from the output phases to
earth it can be verified by checking for any faults with a megohmmeter between ground and the motor leads.) If a current limit
has been exceeded in the VFD check that the motor can be turned. If the pump is being overloaded reduce the pump speed
using hand mode control. If the alarm persists after powering up, contact an Armstrong Technical Service representative.
2
External VFD Voltage
The voltage into the VFD is out of range. Verify that the correct voltage required to operate the VFD is present by measuring
each of th three phases. If the alarm persists after cycling power to the pump, contact an Armstrong Technical Service repre-
sentative.
3
Internal VFD Voltage
An internal voltage generated by the VFD is out of range. If the alarm persists after cycling power to the pump, contact an
Armstrong Technical Service representative.
4
Internal VFD
An internal error in the VFD has occurred. If the alarm persists after cycling power to the pump, contact an Armstrong Tech-
nical Service representative.
5
VFD Parameter
One or more of the parameters to control the VFD is not correct. Check the settings on the control card. If the alarm persists
after cycling power to the pump, contact an Armstrong Technical Service representative.
6
VFD Startup
An error occurred during the start-up of the motor. Turn off the power to the pump and verify that the motor can be turned by
using hand mode control. If the alarm persists after powering up, contact an Armstrong Technical Service representative.
7
Other VFD
There has been an unknown alarm condition generated by the VFD. If the alarm persists after cycling power to the pump,
contact an Armstrong Technical Service representative.
8
VFD Communication
There is a communication issue between the control card and the VFD. Turn off the power to the pump and check the con-
nectors between the control card and the VFD.
9
VFD Speed
The speed set by the VFD is not within tolerance. If the alarm persists after cycling power to the pump, contact an Armstrong
Technical Service representative.
10
Reserved
Summary of Contents for AquaForce 30XV140
Page 79: ...79 Fig 76 VFD Communication Wiring Compressor A B Fan VFD A1 A2 B1 B2...
Page 228: ...228 Fig 90 30XV Typical Field Wiring Schematic cont...
Page 229: ...229 Fig 91 30XV Standard Tier 140 275 All Voltages Power Schematic NOTE See Legend on page 226...
Page 230: ...230 Fig 92 30XV Standard Tier 300 325 All Voltages Power Schematic NOTE See Legend on page 226...
Page 240: ...240 Fig 99 30XV Communication Wiring...
Page 241: ...241 Fig 100 30XV 115V Control Wiring All Tonnages All Voltages...
Page 242: ...242 Fig 101 30XV 24V Control Wiring 30XV140 325 All Voltages...
Page 243: ...243 Fig 101 30XV 24V Control Wiring 30XV140 325 All Voltages cont...
Page 244: ...244 Fig 102 30XV 24V Control Wiring 30XV350 500 All Voltages...
Page 245: ...245 Fig 102 30XV 24V Control Wiring 30XV350 500 All Voltages cont...
Page 246: ...246 Fig 103 Component Arrangement Diagram for 30XV140 325...
Page 247: ...247 Fig 103 Component Arrangement Diagram for 30XV140 325 cont...
Page 248: ...248 Fig 104 Component Arrangement Diagram for 30XV350 500...
Page 337: ...337 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig L System Information...
Page 338: ...338 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig M Unit and Language Settings...
Page 341: ...341 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig P Data Input 2...
Page 342: ...342 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig Q Data Input 3...
Page 347: ...347 APPENDIX J FACTORY SUPPLIED PUMPS cont Fig U Pump Wiring Diagram...
