Page 4–172
DURApulse GS4 AC Drive User Manual – 1st Ed, Rev A - 10/20/2017
Chapter 4: AC Drive Parameters
sl eeP/wake-uP Mode #03:
internal Pid Frequency calculation coMMand (using Pid; P7.00 = 1 or 2, or P7.00 = 3 or 4
and in reMote/auto Mode, or P7.00 = 5 or 6 and in local/hand Mode)
•
As the PID Feedback Value (PV) rises above the "Sleep Reference" value set in P7�29, the output
frequency decreases at a rate determined by the active deceleration parameter (P1�02, 04, 06, or
08)� At the same time, "Sleep Time" (P7�31) begins to increment�
•
Depending on the rate of deceleration and the "Sleep Time" setting, the output frequency may
plateau at the "Lower Limit of Output Frequency" (P6�26) if "Sleep Time" is not complete, or
continue deceleration to zero output frequency if "Sleep Time" had elapsed�
•
When the PID Feedback Value (PV) falls below the "Wake-up Reference" value set in P7�30, the
"Wake-up Delay Time" (P7�32) begins to increment� When elapsed, the output frequency begins
to increase at a rate determined by the selected acceleration parameter P1�01, 03, 05, or 07�
•
For Sleep Function to be active in LOCAL and REMOTE modes, P3�57 bit 0 must be set to 1� For
Sleep Mode to be active in REMOTE mode only, P3�57 bit 0 = 0�
Mode #03 Example #1: Forward-Acting PID
•
P7�29 must be greater than P7�30�
•
30kg is the setpoint�
Set the following parameters:
•
P4�03 = 5 (AI1 as PID Feedback Signal)
•
P7�00 = 2 (PID Forward Local/Remote), 4 (PID Forward
Remote Only), or 6 (PID Forward Local Only)
•
P7�29 = 110% [Sleep Reference 33kg = (110%)·(30kg)]
•
P7�30 = 120% [Wake-up Reference 36kg = (120%)·(30kg)]
•
Case #1: If Feedback < 33kg, frequency decreases
•
Case #2: If Feedback > 36kg, frequency increases
Zone PID Physical Quantity
Sleep Zone
When greater that 12kg,
the GS4 drive goes to sleep
Transition Zone
When between 6kg~12kg,
the GS4 drive remains in its
previous status
Wake-up Zone
When less than 12kg, the
GS4 drive wakes up
PID
Feedback
Output
Frequency
P7.30
Wake-up Reference Point
P7.29
Sleep Reference Point
P6.29
Output Freq. Lower Point
P2.08 / P2.16
Setpoint
P7.31
Sleep Time
P7.32
Wake-up
PID Feedback
Output Freqency
To Next Page
Loading...
Need help?
General
