JOHNSON CONTROLS
51
SECTION 2 – OPTIVIEW CONTROL CENTER
FORM 160.79-O3
ISSUE DATE: 11/09/2018
2
Surge Detected (LED)
Illuminates momentarily when a surge is detected by
the Surge Protection feature. If equipped with a VSD
or MV VSD, these are only the surges detected while
the drive is running at maximum frequency.
Stall Count
Displays the number of times the Stall Detector Board
output voltage goes above the High Limit setpoint
while the compressor is running. The VGD Time and
Count can be cleared simultaneously using the VGD
Cycle Count/Timer key displayed in ADMIN access
level. Maximum value is 999999 and will automati-
cally rollover when the count is exceeded.
Stall Time ( __Days __Hrs __Min __Sec)
Displays the accumulated time the Stall Detector Board
output voltage is greater than the High Limit Setpoint
while the compressor is running. The VGD Time and
Count can be cleared simultaneously using the VGD
Cycle Count/Timer key displayed in ADMIN access
level. Maximum value is 999999 and will automati-
cally rollover when the count is exceeded.
VGD Actuator Mode
Displays the current VGD control mode. (Open, Close,
Hold or Auto)
Discharge Pressure
Displays the Discharge Pressure Transducer reading.
Condenser Pressure
Displays the Condenser Pressure Transducer value.
Head Pressure
Displays the Head Pressure value. [(Condenser
Pressure - Evaporator Pressure) / Evaporator Pressure]
PROGRAMMABLE
[VGD] Open (Manual)
This key puts the VGD in manual mode and sends an
open command to the VGD.
[VGD] Close (Manual)
This key puts the VGD in manual mode and sends a
close command to the VGD.
[VGD] Hold (Manual)
This key puts the VGD in manual mode and sends a
hold command to the VGD.
[VGD] Auto
This key returns the VGD to automatic mode.
VGD Count/Timer Clear
Access Level required: ADMIN
Allows clearing of the VGD Count and Time simulta-
neously.
NAVIGATION
Home
Access Level Required: SERVICE
Causes an instant return to the Home Screen.
Compressor 1
Access Level Required: SERVICE
Causes an instant return to the compressor Screen.
VGD 2
Access Level Required: SERVICE
Moves to the VGD 2 subscreen that allows viewing of
compressor 2 VGD parameters.
VGD Setpoints
Access Level Required: SERVICE
Move to the subscreen that allows programming of the
Variable Geometry Diffuser setpoints.
Calibration
Access Level Required: SERVICE
Only available if compressor 1 is stopped. Moves to
the subscreen that allows calibration of compressor 1
VGD.