Changing Parameters; Table 9, Setpoints, Wye-Delta Starter - McQuay RVSS14 Installation, Operation And Maintenance Manual

Starters for centrifugal chillers low voltage, solid state and wye-delta medium/high voltage, solid state and across-the-line
Table of Contents

Advertisement

Changing Parameters

Viewing Parameter Values
Parameter view mode can be entered by:
1. At the default meter display, press the PARAM key to enter parameter mode. "P 1" will
be displayed to indicate Parameter 1.
2. Use the UP and DOWN keys to scroll through the available parameters.
3. Pressing the UP key from "P 1" will advance to parameter "P 2".
4. Pressing the DOWN key from "P 1" will wrap around to the highest parameter.
5. The value of the parameter can be viewed by pressing the ENTER key.
6. To view another parameter without changing/saving the parameter, press the PARAM key
to return to the parameter number display.
To return to the default meter display either:
1. Press the PARAM key while in the parameter number display mode.
2. Wait 60 seconds and the display will return to the default meter display.
Changing Parameter Values
Parameter change mode can be entered by:
1. At the default meter display, press the PARAM key to enter parameter mode.
2. Use the UP and DOWN keys to scroll through the available parameters.
3. The value of the parameter can be viewed by pressing the ENTER key.
4. When viewing the parameter value, the parameter can be changed by using the UP and
DOWN keys.
5. To store the new value, press the ENTER key. When the ENTER key is pressed the
value will be saved and the display will go back to parameter # "P_".
To exit parameter change mode without saving the new parameter value either:
1. Press the PARAM key to return to the parameter number display.
2. Wait 60 seconds and the display will return to the default meter display.
The starter setpoint parameters are factory set and subsequently reviewed during
commissioning by the McQuay startup technician. They should not be changed unless
authorized by McQuay.
The programming procedure is explained above and the following table shows the range of
values and defaults.

Table 9, Setpoints, Wye-Delta Starter

P1
P2
P3
P4
P5
P6
P7
Continued on next page.
32
Description
Motor RLA
Motor Service Factor
Motor Overload Class
Transition Time
Default Meter Display
Sequence Complete Delay Time
Overcurrent Trip Level
Values
1 to 9999 Amps
1.00 to 1.99
OFF, 1 to 40
1 to 30 seconds
0 to 19
0.1 to 5.0 seconds
OFF, 50 to 800 %RLA
Default
1
1.08
10
10
0
2.0
OFF
IOMM Starter

Advertisement

Table of Contents
loading

Table of Contents