YK CENTRIFUGAL LIQUID CHILLER OptiView ... - Johnson Controls

16 160-54-OI-GB0
Cycling Offset - Shutdown
Defines the leaving chilled liquid temperature at which
the unit will shutdown on a 'LEAVING CHILLED LIQUID
- LOW TEMPERATURE'. The 'OFFSET' (below
'SETPOINT') can be programmed between 0.56°C
(1°F) and 35.6°C (64°F) to a minimum cut-out of 2.2°C
(36°F) for water cooling applications (1.1°C (34°F) with
Smart Freeze enabled) or -14.4°C (6°F) for brine/glycol
applications.
When the programmed leaving chilled liquid
temperature 'SETPOINT' is changed, the shutdown is
fixed at of 2.2°C (36°F) for water cooling applications
(1.1°C (34°F) with Smart Freeze enabled) or -14.4°C
(6°F) for brine/glycol applications for the next ten
minutes.
The shutdown will then revert to the 'SETPOINT' plus
the 'OFFSET' after ten minutes has elapsed.
Cycling Offset - Restart
Defines the leaving chilled liquid temperature at which
the unit will restart after a 'LEAVING CHILLED LIQUID -
LOW TEMPERATURE ' shutdown. The 'OFFSET'
(above 'SETPOINT') can be programmed between 0°C
(0°F) and 21.1°C (70°F) to a maximum restart of 26.7°C
(80°F). This 'OFFSET' can be used to reduce unit
cycling by delaying the restart until the cooling load has
increased dramatically.
Local Motor Current Limit
Defines the maximum allowable motor current during
operation as a percentage of FLA. When the motor
current reaches or exceeds the programmed limit the
PRV are prohibited from opening or closed to reduce the
motor current.
Pulldown Demand Limit
Defines the maximum allowable motor current during
pulldown demand limiting at unit startup as a
percentage of FLA. This value overrides the 'LOCAL
MOTOR CURRENT LIMIT' for the time specified in the
motor current 'PULLDOWN DEMAND TIME'.
Pulldown Demand Time
Specifies the period of time that pulldown demand
limiting will be active during unit startup.
Remote Analog Input Range
(Flash Memory Card version C.MLM.01.01 or later)
Defines the signal range applied for remote reset of the
leaving 'Chilled Liquid Temperature Setpoint' and
'Current Limit Setpoint' in the analogue remote mode.
The value should be programmed for 0-10Vdc if the
remote signal is 0-10 Vdc or 0-20 mA. If the remote
signal is 2-10 Vdc or 4-20 mA, the value must be
programmed for 2-10 Vdc.