McQuay WSC Operating Manual page 72

Microtech ?? for centrifugal chillers and templifiers
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P20
P21
P22
P23
P24
P25
P26
P27
P28
P29
P30
P31
P32
NOTE: Passcode is a numerical password that can be entered in the field. The factory default is
to disable the password requirement. It is recommended that a Passcode not be entered.
Messages
Setpoint P5 for Wye-Delta or P13 for solid state can be set to establish what message is shown on
the LED. Selecting meter display "0" (which is the default) will display the active status message
as shown in Table 27 or Table 28, except if there is a fault (requiring a message) or some other
information has been requested.
Alternatively, parameter P5 or P13 can be set to select a message (1 to 19 as shown in Table 29).
Table 27, Status Messages, Wye-Delta Starter
No Line
Ready
Running in wye mode.
Running in delta mode.
Overload Alarm – The motor overload
level is between 90% and 100%.
Overload Fault – The motor overload
level has reached 100%.
Overload Lockout – A start is not
allowed until the motor overload level
cools below 100%.
Table 28, Status Messages, Solid State Starter
No Line
Ready
Accelerating
Up to Speed
Run – Done with ramp but not yet Up
to Speed.
Decelerating
Overload Alarm – The motor overload
level is between 90% and 100%.
Overload Fault – The motor overload
level has reached 100%.
Overload Lockout – A start is not
allowed until the motor overload level
cools below 100%.
72
Description
Current Imbalance Trip Level
Controlled Fault Stop
Auto Fault Reset Time
CT Ratio
Control Source
Modbus Address
Modbus Baud Rate
Modbus Timeout
Analog Output Function
Analog Output Span
Analog Output Offset
Passcode (See Note)
Fault Log
Values
5 to 40 %
OFF, On
OFF, 1 to 120 seconds
72, 96, 144, 288, 864, 2640,
2880, 5760, 8000
Ter: Terminal
Net: Network
1 to 247
1.2, 2.4, 4.8, 9.6, 19.2 Kbps
OFF, 1 to 120 seconds
0 to 11
1 to 125 %
0 to 99 %
0 to 9999
xFyy
Control Power Lockout – A start is not
allowed because the control power is
too low.
xxx xxx = overload content. Press DOWN to
toggle.
xx xx = Alarm code. If the condition
persists, a fault will occur.
xx xx = Fault code. Press RESET to clear.
Instantaneous Overcurrent – Press
RESET to clear.
Default – Flashes when parameter
defaults are loaded.
Control Power Lockout – A start
is not allowed because the
control power is too low.
xxx xxx = overload content. Press
DOWN to toggle.
xx xx = Alarm code. If the
condition persists, a fault will
occur.
xx xx = Fault code. Press RESET to
clear.
Instantaneous Overcurrent –
Press RESET to clear.
Default – Flashes when
parameter defaults are loaded.
Default
35
OFF
60
2640
tEr
2
19.2
3
1
100
0
Disabled
OM Centrif Micro ΙΙ-5

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