Control Techniques Digitax ST Advanced User's Manual page 94

Parameter
Menu 6
structure
A second enable connected to the digital I/O on the drive selected for the fast disable function. The circuit must be arranged so that a fault which
causes the fast input to be forced high cannot cause the SAFE TORQUE OFF (SECURE DISABLE) input to be forced high, including the case where
a component such as a blocking diode has failed.
6.30 Sequencing bit: Run forward
Bit SP
Coding
1
Default 0
Update rate 4ms read
6.31 Sequencing bit: Jog
Bit SP
Coding
1
Default 0
Update rate 4ms read
6.32 Sequencing bit: Run reverse
Bit SP
Coding
1
Default 0
Update rate 4ms read
6.33 Sequencing bit: Forward/reverse
Bit SP
Coding
1
Default 0
Update rate 4ms read
6.34 Sequencing bit: Run
Bit SP
Coding
1
Default 0
Update rate 4ms read
In normal operation the sequencer has been designed to operate with Run forward / Run reverse controls, or with a Run control and a forward
reverse selector. If Run forward / Run reverse control is required then bits Pr 6.30 and Pr 6.32 should be used to control the drive (digital inputs should
not be routed to bits Pr 6.33 and Pr 6.34). If Run control with a forward reverse selector is required then bits Pr 6.33 and Pr 6.34 should be used to
control the drive (digital inputs should not be routed to bits Pr 6.30 and Pr 6.32).
The Run forward and Run reverse, or Run sequencing bits can be made latching by setting bit Pr 6.40. The Not stop bit (Pr 6.39) should be one to
allow the sequencing bit to be latched. If the Not stop bit is zero all latches are cleared and held at zero. The jog or jog reverse sequencing bits can
also cause the drive to run provided the motor is stopped when these bits are activated and the normal run sequencing bits are not providing a run
signal.
6.35 Forward limit switch
Bit SP
Coding
1
Default 0
Update rate 250μs read
6.36 Reverse limit switch
Bit SP
Coding
1
Default 0
Update rate 250μs read
94
Keypad and
Parameter x.00
display
FI DE TE VM DP ND
FI DE TE VM DP ND
FI DE TE VM DP ND
FI DE TE VM DP ND
FI DE TE VM DP ND
FI DE TE VM DP ND
FI DE TE VM DP ND
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Parameter Advanced parameter
description format 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
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
Serial comms Electronic
protocol nameplate
PS
PS
PS
PS
PS
PS
PS
Digitax ST Advanced User Guide
Issue Number: 1
Performance