Control Techniques Digitax ST Advanced User's Manual page 62

Parameter
Menu 3
structure
Drive encoder reference destination
3.46
Bit SP
Coding
Range Pr 0.00 to Pr 21.50
Default Pr 0.00
Update rate Read on reset
The drive encoder input can be used as a reference to control a drive parameter. The drive encoder reference parameter (Pr 3.45) gives the speed of
the encoder input as a percentage of the maximum drive encoder reference provided that the number of encoder lines per revolution (Pr 3.34) has
been set up correctly. This may then be scaled and routed to any non-protected drive parameter.
3.47 Re-initialise position feedback
Bit SP
Coding
1
Update rate Background read
3.48 Position feedback initialised
Bit SP
Coding
1
Update rate Background write
At power-up Pr 3.48 is initially zero, but is set to one when the drive encoder and any encoders connected to position category modules have been
initialized. The drive cannot be enabled until this parameter is one.
If any trips occur that could indicate that the encoder system is no longer initialized correctly (i.e. EnC2-EnC8 and Enc11-Enc17), or the internal 24V
or encoder power supplies are overloaded (i.e. EnC1 or PS.24V), Pr 3.48 is set to zero and the drive cannot be enabled until the encoder is re-
initialized. It is likely that the failure of either of these supplies will cause one of the other encoder trips and it should be noted that EnC1 or PS.24V
trips can override EnC2-EnC8 and Enc11-Enc17 trips so that the power supply overload is not mistaken for an encoder error.
3.49 Full motor object electronic nameplate transfer
Bit SP
Coding
1
Default 0
Update rate Read on reset
When this parameter is set to one, additional information for the motor object can be transferred from Pr 18.11 to Pr 18.17 as shown below.
User parameter Motor object parameter
Pr 18.11 Motor object version number
Pr 18.12 Motor type (MSW)
Pr 18.13 Motor type (LSW)
Pr 18.14 Motor manufacturer
Pr 18.15 Motor serial number (MSW)
Pr 18.16 Motor serial number
Pr 18.17 Motor serial number (LSW)
3.50 Position feedback lock
Bit SP
Coding
1
Default 0
Update rate 4ms read
If Pr 3.50 is set to one Pr 3.28, Pr 3.29 and Pr 3.30 are not updated. If this parameter is set to zero these parameters are updated normally.
62
Keypad and
Parameter x.00
display
FI DE Txt VM DP ND
1 2
FI DE Txt VM DP ND
FI DE Txt VM DP ND
1
FI DE Txt VM DP ND RA NC NV
FI DE Txt VM DP ND RA NC NV
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Parameter Advanced parameter
description format descriptions
RA NC NV PT US RW BU
1 1 1
RA NC NV PT US RW BU
1 1
RA NC NV PT US RW BU
1 1
PT US RW BU
1 1
PT US RW BU
1 1
Serial comms Electronic
protocol nameplate
PS
1
PS
PS
PS
PS
Digitax ST Advanced User Guide
Issue Number: 1
Performance