Start-Up and Shutdown
60
RTHD-SVX01K-EN
Stopped to Starting
The stopped to starting diagram shows the timing from a
stopped mode to energizing the compressor. The shortest
allowable time would be under the following conditions:
•
No motor restart inhibit
•
Evaporator and Condenser Water flowing
•
Power up Start Delay Timer has expired
•
Adjustable Stop to Start Timer has expired
•
Need to cool
The above conditions would allow the compressor to start
in 60 seconds.
Starting Wye-Delta
The Starting Wye-Delta shows the order of operation for this type of starter.
Figure 28.
Sequence of events: stopped to starting
Enforce Restart
Inhibit Timer
(0 to 30 mins)
Confirm Condenser
Water Flow
(6 Second Filter)
Stopped
Or
Run
Inhibit
Chiller Mode
Set to Auto
Auto
Call for
Cooling
Waiting
to Start
Starting
Compressor
Energize Evaporator
Water Pump Relay
Energize Condenser
Water Pump Relay
Confirm Evaporator Water
Flow Within 20 minutes
(6 Sec Filter)
Confirm Condenser Water
Flow Within 20 minutes
(6 Sec Filter)
Pre-Position EX V
Waiting
to Start
Oil Heater always ene rgized
when compressor is d e -
energized
Confirm Evaporator
Water Flow
(6 Second Filter)
Energize Unload
Solenoid
Confirm Presence of Oil
With Optical Oil Sensor
(0 to 2 mins)
Waiting
to Start
Condense r
Water Pump
Pre-Run
Waiting
to Start
Enforce 'Cond
Pmp Strt Delay'
(0 to 300 Sec)
(0 to 30 mins)
Enforce 'Cprsr
Strt Delay'
(0 to 300 Sec)
Waiting
to Start
Figure 29.
Sequence of events: Starting wye-delta
Arm/Run Command to Starter Module
Energize Start and
Stop Relays
Energize Stop and Start
Relays
Confirm No Compressor Currents
(Starter Fault Type I )
Confirm No Transition Complete Signal
(Transition Complete Input Shorted)
De-Energize Start and
Stop Relays
Energize and Hold
Shorting Relay
Confirm No Compressor Currents
(Starter Fault Type II )
When Currents Drop Below 85% RLA + 1 . 5
Seconds, Energize Transition Relay
De-Energize Shorting
Relay
Energize Run
Contactor
De-Energize Transition
Relay
Confirm Transition Complete
Input within 2.5 seconds
(Starter Did Not Transition)
Starting Compressor
Max Accel Timer
(6 to 64 Seconds)
Starting Compressor
Starting
Compressor
Compressor
Running
Confirm Proper Compressor Rotation
within 0.3 seconds (Phase Reversal)
and > 5% RLA (Phase Loss)
Confirm > 10% RLA Compressor
Currents within 1.6 se conds
(Starter Fault Type III )
Starter Contactor Integrity Test
Starting Compressor
in Wye
Transition Starter to Delta
Содержание Optimus RTHD
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