Technical information

5 – PARAMETER DESCRIPTIONS
76
P53 Inline Configuration I/O 15
LCD Display
I/O:Inline Confg
15 3.0 sec
Range OFF, 0 – 10.0 seconds (Default 3.0 sec)
Description The Inline Configuration parameter controls the behavior of the No Line warning, No Line fault, and
the Ready relay function.
If the Inline Configuration parameter is set to Off, then the MX assumes that there is no Inline
contactor and that line voltage should be present while stopped. If no line is detected, then a No Line
alarm condition exists and the ready condition does not exist. If a start is commanded, then a No
Line fault is declared.
If the Inline Configuration parameter is set to a time delay, then the MX assumes that there is an
Inline contactor and that line voltage need not be present while stopped. If no line is detected, then
the No Line alarm condition does not exist and the ready condition does exist. If a start is
commanded and there is no detected line voltage for the time period defined by the Inline
Configuration parameter, then a “noL” (No Line) fault is declared.
In order to control an inline contactor, program a relay as a Running relay. This is the default
function for R2.
NOTE: This fault is different than over/under voltage since it detects the presence of NO line.
See Also Relay Output Configuration parameters on page 70
P54 Bypass Feedback Time I/O 16
LCD Display
I/O:Bpas Fbk Tim
16 2.0 sec
Range 0.1 – 5.0 seconds (Default 2.0 sec)
Description The programmable inputs DI 1, DI 2 or DI 3 may be used to monitor an auxiliary contact from the
bypass contactor(s) or in the case of a wye-delta starter the 2M contactor. The digital input is
expected to be in the same state as the UTS relay. If it is not, the MX trips on Fault 48 (Bypass
Fault).
The Bypass Confirmation input must be different from the UTS relay for the time period specified by
the Bypass Feedback Time parameter before a fault is declared. There is no alarm associated with
this fault.
NOTE: A digital input needs to be programmed to Bypass/2M for this function to operate.
See Also Digital Input Configuration parameters on page 69
Application section 6.2.1, Wye Delta, on page 91
Theory of Operation section 8.5, Wye-Delta Operation, on page 129