Trane CH530 Installation, Operation And Maintenance Manual page 44

Service Interface
Table 20. TechView™: Status View: MOTOR
Chiller Motor information, then AFD information as shown: Use
down arrow to scroll to AFD items
AFD Output Power
Winding Temp 1
Winding Temp 2
Winding Temp 3
AFD Transistor Temperature
AFD Speed
AFD Frequency
AFD Frequency Command
AF Boundary Pressure Coefficient
AF Pressure Coefficient
AF Re-Optimization Time Remaining
AFD DC Bus Voltage
AFD Last Diagnostic Code (decimal)
Table 21. TechView™: Setpoint View: Starter Tab
(for CH530 Main Processor Control Algorithm settings)
Description
AFD Re-Optimization Timer
AFD Re-Optimization Sensitivity
AF Boundary Pressure Coefficient Y Intercept
AF Boundary Pressure Coefficient Y Intercept Max - Cprs
ADF Maximum Frequency
AFD Minimum Frequency
Notes: Use only Factory Defaults. Defaults other than above may effect chiller reliability.
1. AF Re-optimization Timer - The re-optimization timer is a time based parameter for determining when to re-optimize
the surge boundary. This timer runs only when the compressor is running and gets reset when a surge condition occurs
or the compressor is shut down.
2. AF Boundary PC Y-Intercept - The Boundary Pressure Coefficient (BPC) Y-intercept value is used to adjust the
magnitude of the BPC. This value is unique because in can be changed by the user as well as internally by the control
algorithm. The BPC Y-intercept is adjustable from 0.01 to 2.0 in increments of 0.01
3. AF Boundary PC Y-Intercept - Maximum The Boundary Pressure Coefficient (BPC) Y-intercept is never allowed to
exceed a maximum value. This value is a manual way to control the aggressiveness of the efficiency optimizing
procedure.
For example, as this value is lowered the probability of encountering a surge decreases but so does the potential
efficiency improvements at a given operating condition. The Boundary Pressure Coefficient (BPC) Y-intercept maximum is
adjustable from 0.001 to 2.0 in increments of 0.01.
4. AF Re-optimization Sensitivity - Every 30 minutes the optimizing algorithm will compare the current value of the inlet
guide vane position to the value that was stored after the last re-optimization. If the difference is greater than the AF Re
optimization Sensitivity setting, re-optimization will occur. This value is adjustable from 0 to 100%, where 0 would
guarantee re-optimization every 30 minutes and 100% would guarantee no re-optimization.
Table 22. TechView™: Manual Override View
(TechView CH530 Main Processor Manual Control
Oil Pump Control
Also turns on AFD coolant pump)
Inlet Guide Vanes (IGV) and AFD
Control
44
KW
F/C
F/C
F/C
F/C
RPM
Hz
Hz
X.XX
X.XX
Hrs/Mins
Vdc
number
Min
1
0
0.01
0.01
0
0
Auto Manual Monitor Values
Oil Tank Pressure
Oil Pump Discharge Pressure
Oil Differential pressure
Oil Pump OVerride Time Remaining
Auto Manual Targets: IGV Position first Stage (%)
XX% steps IGV Position First Stage (Steps)
XX Hertz AFD Speed:
AFD Frequency
XX Hertz
Xxxx Amps
Max Factory Default
255 12
100 10%
2.00 0.40
2.00 2.00
60 60
60 38
Units
Hours
Percent
N/A
N/A
Hertz (Hz)
Hertz (Hz)
Manual Control of Oil/Coolant Pump will
time out after 10 min
Upon selection of Manual, used can enter
individually target for vanes position and,
or, AFD Speed commands
AFDK-SVU01C-EN