WAGO-I/O-SYSTEM 750
Parameterizing
77
750-636/000-x00 DC Drive Controller 24V/5A
Manual
Version 2.1.0
8.6.5
Standstill_Limit, EnginePowerSupply, Positioning_Retry,
Z_Input_Enable, Stop-Mode_PwrUp
Table 43: 2.2.2 Prestop_Pos
Parameter address Function
Access Factory default
setting
4
Standstill_Limit
EnginePowerSupply
IncScale
Positioning_Retry
Z_Input_Enable
Stop-Mode_PwrUp
R/W
0x1405
Bit 0 ... 5: Standstill_Limit [0 ... 58]
The value set here defines from which speed in impulse/s the drive is considered to be at standstill.
More information about the standstill condition is available in the chapter "Function Description" >
"Standstill Condition".
The smallest acquisition interval is 17 ms and corresponds to a value of 58. Lower values increase
the acquisition interval. Detection of standstill may be unsteady for incremental encoders with very
few pulses per revolution (e.g., 2) and brief acquisition intervals (i.e., Standstill_Limit with higher
values). To remedy this, set a lower value for Standstill_Limit.
0:
< 1 pulse/s
1:
1 pulse/s
2 ... 58:
n pulse/s
5:*
5 pulse/s
Bit 6: Reserved
Bit 7: EnginePowerSupply (only 750-636/000-700)
The I/O module can be operated at motor operating voltage levels less than 24 V when this bit is
set. In this case, motor voltage monitoring is de-activated.
0:*
Motor voltage = 24 V
1:
Motor voltage < 24 V
Bit 8 … 9: [0 ... 3]
Evaluation of quadrature pulses
0:*
1x evaluation of quadrature pulses
1:
2x evaluation of quadrature pulses
2:
4x evaluation of quadrature pulses
3:
Invalid entry
Bit 10 ... 13: Positioning_Retry [0 ... 15]
Before reporting a positioning error, the I/O module can decide whether to initialize another
positioning attempt consisting of a swing-back drive and a subsequent setpoint position approach.
The parameter described here defines the maximum permissible number of retries. A positioning
error is detected when the accuracy as given by the tolerance window is not achieved.
0:
No repeated positioning in case of positioning error
1 ... 15:
Max. number of positioning retries in case of positioning error
5:*
Max. of 5 positioning retries in case of positioning error
Bit 14: Input_Enable (only 750-636)
Use this bit to set the parameters such that the preset function is initiated as a function of the Z
input. A further prerequisite for automatic execution of the Preset function is that the
PresetInput_Enable control bit is set.
0:*
Preset function via the Preset input.
When an edge is detected at the Preset input, the Preset value is assumed at the
actual position.
