Maximum Reference Clamp; Minimum Reference Clamp; Negative Minimum Reference Clamp Enable - Control Techniques unidrive sp Advanced User's Manual

Parameter Keypad and Parameter
structure display x.00
1.06

Maximum reference clamp

Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Closed-loop vector and servo: VM = 1
Open-loop
Range
Closed-loop vector and Servo
Open-loop
Default Closed-loop vector
Servo
Second motor
Open-loop, Closed-loop vector, Servo
parameter
Update rate Background read
See below.
1.07

Minimum reference clamp

Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
Closed-loop vector and Servo: VM = 1
Open-loop
Range
Closed-loop vector and Servo
Default Open-loop, Closed-loop vector, Servo
Second motor
Open-loop, Closed-loop vector, Servo
parameter
Update rate Background read
The range shown for Pr 1.07 shows the range used for scaling purposes (i.e. for routing to an analog output etc.). Further range restrictions are
applied as given below.
Pr 1.08
(Neg min ref enable) (Bipolar mode enable)
0
0
1
1
The same limits are applied to Pr 21.02, but based on the value of Pr 21.01.
(If the second motor map is selected Pr 21.01 is used instead of Pr 1.06 and Pr 21.02 instead of Pr 1.07)
1.08

Negative minimum reference clamp enable

Drive modes Open-loop, Closed-loop vector, Servo
Bit SP
Coding
1
Default Open-loop, Closed-loop vector, Servo
Update rate Background read
The effects of the reference clamps (Pr 1.06 and 1.07), the negative minimum clamp enable (Pr 1.08) and the bipolar reference enable parameters
are defined below.
The variable maximum limit for reference parameters, SPEED_FREQ_MAX, is defined as:
If Pr 1.08 = 0: SPEED_FREQ_MAX = Pr 1.06
If Pr 1.08=1: SPEED_FREQ_MAX is Pr 1.06 or -Pr 1.07 whichever is the largest
(If the second motor map is selected Pr 21.01 is used instead of Pr 1.06 and Pr 21.02 instead of Pr 1.07)
Unidrive SP Advanced User Guide
Issue Number: 7
Parameter Advanced parameter
description format descriptions
FI DE Txt VM DP ND
1
0 to 3,000.0 Hz
±SPEED_LIMIT_MAX rpm
EUR: 50.0, USA: 60.0
EUR: 1,500.0, USA: 1,800.0
3,000.0
Pr 21.01
FI DE Txt VM DP ND
1
±3,000.0 Hz
±SPEED_LIMIT_MAX rpm
0.0
Pr 21.02
Pr 1.10
Open-loop
0 0 to Pr 1.06
1 0
0 -3,000 to 0Hz
1 -3,000 to 0Hz
FI DE Txt VM DP ND
0
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Serial comms
Macros
protocol
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1 1
Closed-loop vector and Servo
0 to Pr 1.06
0
-SPEED_LIMIT_MAX to 0 rpm
-SPEED_LIMIT_MAX to 0 rpm
RA NC NV PT US RW BU
1 1
Electronic Feature look-
Performance
nameplate up table
PS
1
PS
PS
Menu 1
27