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FORM 160.54-O1
ISSUE DATE: 9/10/2014
JOHNSON CONTROLS
106
SECTION 2 - OPTIVIEW CONTROL CENTER INTRODUCTION
Motor Run (LED)
Illuminated when the Control Center is commanding
the drive to run. Otherwise, it is extinguished.
Output Frequency
Displays the frequency at which the drive is operating
the motor. This value is returned from the drive Logic
Board.
Pre-rotation Vanes Position
Displays the present Pre-rotation Vane position as a
value between 0% (closed) and 100% (full open).
Delta P/P
Displays chiller head pressure calculated as (condenser
pressure - evaporator pressure/evaporator pressure).
This value is calculated by the Microboard.
Temperature Differential (LCHLT – Setpoint)
Displays the difference between the Leaving Chilled
Liquid Temperature and the Leaving Chilled Liquid
Temperature Setpoint.
Command Frequency
This is the speed command being sent to the Drive
Logic Board in either Auto or Manual Speed Control
mode.
Speed Decrease Inhibit – Surge Map Point (LED)
Illuminates when the Microboard ACC function is un-
able to reduce speed due to a mapped surge point. Oth-
erwise, it is extinguished.
Mapping Inhibited (LED)
Illuminates when the Microboard ACC function is not
permitted to map points or reduce speed due to unsta-
ble Leaving Chilled Liquid Temperature, manual speed
control, current limit in effect (chiller FLA only) or dur-
ing Soft Shutdown (software version C.OPT.01.21.307
and later). Otherwise, it is extinguished.
ACC Surge Detected (LED)
Illuminates momentarily when a surge is detected by
the ACC function in the Microboard, while the drive is
running at less than maximum frequency.
Surge Avoidance Surge Detected (LED)
Illuminates momentarily when a surge is detected by
the Surge Protection feature. This feature only detects
surges that occur while the drive is running at maxi-
mum frequency.
ACC Surge Count
Increments when a surge is detected while the drive is
running at less than maximum frequency.
Surge Map Point Count
Displays the total number of data points contained in
the surge map.
For fields requiring access level of SER
-
VICE. Service Technicians refer to the
OptiView Control Center - Service Instruc
-
tions (Form 160.54-M1) for operation
instructions and explanation of all pro-
grammable setpoints and displayed values.
PROGRAMMABLE
VSD Start Frequency
(Software version C.OPT.01.21.307 and later)
Sets the starting frequency from which the ramp-up
will begin. Programmable over the following range:
•
60Hz units – 30Hz to 60Hz (default 45Hz)
•
60Hz units with Quick Restart – 30Hz to 45Hz
(default 45Hz)
•
50Hz units – 25Hz to 50Hz (default 37.5Hz)
•
50Hz units with Quick Restart – 25Hz to 37.5Hz
(default 37.5Hz)
ACC Mapping Enable
(Software version C.OPT.01.21.307 and later)
Sets the Delta T (Leaving Chilled Liquid Temperature
- Setpoint) needed to be met to enable surge mapping
and speed reduction initially on startup. Programmable
over the range of 0.5°F to 4.0°F (default 1.0°F). With
software version C.OPT.01.23.307 (and later), the
range is 0.5°F to 20.0°F.
Surge Margin Adjust
This value determines how close the frequency reduc-
tion will be allowed to get to the surge line. Program-
mable over the range of 0.0 (default) to 25.0Hz. Ser-
vice Technicians should refer to
Variable Speed Drive
– Service Instructions (Form 160.00-M4)
prior to ad-
justing this setpoint.