MA7200 PLUS Operating Manual
TECO – Westinghouse Motor Company P3-07 - P3-09
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Parameter Details
The following parameters pertain to the PID over feedback signal.
P3-04
Over feedback level (Cannot change during operation)
P3-04 Range: 000.00 – 099.99%
Note-
The engineering units and range are set by parameter P1-01
P3-05
Over feedback detection delay time (Cannot change during operation)
P3-05 Range: 0000.0 – 6000.0 sec.
P3-06
Over feedback action (Cannot change during operation)
P3-06=0: None
1: Over feedback alarm
2: Over feedback fault
If PID is enabled (Sn-64
≠
0), Over Feedback Detection is enabled if P3-06 Over Feedback Action is set to =1 or 2
or
at least one of Multi-Function Outputs Sn-30 (Relay), Sn-31 (DO1), or Sn-32 (DO2 or R2 Relay) is set to =25
(Over Feedback)
When PID feedback rises above the Over Feedback Level set via P3-04 for the time exceeding the programmed
Over Feedback Delay Time P3-05, the inverter status will be controlled by parameter P3-06 Over Feedback Action
as shown in the following table 9.2.4.6. Also if any of the Multi-Function Outputs Sn-30 (Relay), Sn-31 (DO1), or
Sn-32 (DO2 or R2 Relay) are set to =25 (Over Feedback), that output will be turned ON.
Table 9.2.4.6 Inverter Status vs. P3-06 Value
P3-06
Value
Inverter Status while Over
Feedback
Message
while Over Feedback
0
Continue Running
No Message
1
Continue Running
Over Feedback Alarm
2
Shut Down
Over Feedback Fault
Fig. 9.2.4.7 below shows a block diagram illustrating the Over Feedback Detection Function.
Fig. 9.2.4.7 Over Feedback Detection Function