Pid Upper Limit; Pid Lower Limit; Pid Scaling; Pid Destination - Emerson unidrive sp User Manual

Parameter Keypad and
Menu 14
structure display
14.13

PID upper limit

Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop, Closed-loop vector, Servo,
Default
Regen
Update rate Background read
14.14

PID lower limit

Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop, Closed-loop vector, Servo,
Default
Regen
Update rate Background read
If Pr 14.18 = 0, the upper limit (Pr 14.13) defines the maximum positive output for the PID controller and the lower limit (Pr 14.14) defines the
minimum positive or maximum negative output. If Pr 14.18 = 1, the upper limit defines the maximum positive or negative magnitude for the PID
controller output. When any of the limits are active the integrator is held.
14.15

PID scaling

Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop, Closed-loop vector, Servo,
Default
Regen
Update rate 4ms read
14.16

PID destination

Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
Open-loop, Closed-loop vector, Servo,
Range
Regen
Open-loop, Closed-loop vector, Servo,
Default
Regen
Update rate Read on reset
The value written to the destination parameter is (PID controller output x scaling) + PID main reference.
14.17 PID hold integrator
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
1
Open-loop, Closed-loop vector, Servo,
Default
Regen
Update rate 4ms read
When this parameter is set to 0 the integrator operates normally. Setting this parameter to 1 will cause the integrator value to be held. Setting this
parameter does not prevent the integrator from being reset to zero if the PID controller is disabled.
250
Parameter Parameter
x.00 description format
FI DE Txt VM DP ND
2
0.00 to 100.00 %
100.00
FI DE Txt VM DP ND
2
±100.00 %
-100.00
FI DE Txt VM DP ND
3
0.000 to 4.000
1.000
FI DE Txt VM DP ND
1 2
Pr 0.00 to Pr 21.51
Pr 0.00
FI DE Txt VM DP ND
0
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Advanced parameter
Macros
descriptions
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1 1
RA NC NV PT US RW BU
1 1
Serial comms Electronic
Performance RFC mode
protocol nameplate
PS
1
PS
PS
1
PS
1
PS
Unidrive SP Advanced User Guide
Issue Number: 10