24
TRUCLIMATE 700 90-140 TON INSTALLATION MANUAL
Electrical System and Controls - Safety Circuit
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I
In
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stantaneous Lock-Out
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antaneous Lock-Out
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Lock-Out after 30 sec
Chiller Safety Circuit
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Safe Torque Off (STO)
• “motor-off”
function.
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Inverter (VFD) is powered anytime the chiller power is on.
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STO is wired to the compressor contactor (CC) output of the Aurora control.
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Anytime Aurora senses a fault that would require compressor shutdown, it will trigger the STO input to turn
the motor off.
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High Pressure Switch
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NC below 320 psig
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Low Pressure Switch
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NC above 4 psig
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Emergency Stop Switch (E-stop)
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Wired to ABC – emergency shutdown (ES) input.
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LED on E-stop will illuminate when tripped.
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HydroLink will display that ABC has been put into emergency shutdown mode.
ABC Compressor Controller
Relay
Compressor
STO
VFD
Power
Compressor
VFD
Содержание TruClimate 700
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Страница 25: ...25 TRUCLIMATE 700 90 140 TON INSTALLATION MANUAL Wiring Schematic next page...
Страница 36: ...36 TRUCLIMATE 700 90 140 TON INSTALLATION MANUAL Evaporator Pressure Drop...
Страница 37: ...37 TRUCLIMATE 700 90 140 TON INSTALLATION MANUAL Condenser Pressure Drop...
Страница 39: ...39 TRUCLIMATE 700 90 140 TON INSTALLATION MANUAL Screw Refrigeration Cycle Analysis...
