Line Per Revolution Divider; Ssi Output Turns; Ssi Output Comms Resolution - Control Techniques unidrive sp Advanced User's Manual

Parameter Keypad and Parameter
structure display x.00
x.45 Position feedback initialised
Drive modes Open-loop, Closed-loop vector, Servo, Regen
Bit SP
Coding
1
Update rate Background write
At power-up Pr x.45 is initially zero, but is set to one when the encoder connected to position module has been initialised. The drive cannot be
enabled until this parameter is one.
If the encoder power-supply is lost, or the encoder type parameter is changed for an encoder connected to a Solutions Module, and the encoder type
is SC, SC.Hiper, SC.EnDat or EnDat the encoder will no longer be initialised. When an encoder is no longer initialised Pr x.45 is reset to zero and the
drive cannot be enabled. The encoder may be re-initialised, provided the drive is not active, by setting Pr 3.47 to one. Pr 3.47 is automatically reset to
zero when the initialisation is complete.
x.46

Line per revolution divider

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
The equivalent line per revolution (Pr x.10) is divided by the value in Pr x.46. This can be used when an encoder is used with a linear motor where the
number of counts or sine waves per pole is not an integer.
For example, 128.123 lines per revolution would be set as 128123 in Pr x.10 and 1000 in Pr x.46 giving:
128123 / 1000 = 128.123.
If the value is less than 1, the value used will be 1.
x.47

SSI output turns

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
Used by the simulation module.
x.48

SSI output comms resolution

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
Used by the simulation module.
Unidrive SP Advanced User Guide
Issue Number: 7
Parameter Advanced parameter
description format descriptions
FI DE Txt VM DP ND
1
FI DE Txt VM DP ND
0 to 1,024
1
FI DE Txt VM DP ND
0 to 16
16
FI DE Txt VM DP ND
0 to 32 bits
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
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
Electronic Feature look-
Performance
nameplate up table
PS
PS
1
PS
1
PS
1
Menus 15 to 17
SM-Uni Enc Pl
245