Instruction Manual PSx3xxIO
33
The step width for brief key pressing can be adjusted via ISDU 135. A single step is
executed when one of the external buttons is pressed. If the key is released before
the single step has been completed, this is nevertheless brought to an end. If the
same key remains pressed, a continual manual drive follows the single step after a
brief waiting time as long as the key is pressed. This continuous manual drive is
always active if the bus is not connected. If the bus is connected, Bit 3 must also be
activated in the control word in addition to Bit 5 (
“
Release manual drive in jog mode
”
).
If Bit 3 is reset, only one individual step is performed each time a key is pressed even
if the same key is pressed for longer than the duration of the individual step.
The waiting time until the drive transfers to manual drive is set with ISDU 163. In
manual drive, the drive moves to the respective end switch position (ISDU 129 and
130).
If both keys are pressed during a jog drive, the run is immediately cancelled. A new
jog drive is only possible again if both keys have been released.
For activation, the respective key contact (Pin 2 or 3 of the 4-pin connector) must be
connected with +24V (Pin 1). If the key signal is produced by a source galvanically
separated from the control supply, GND (Pin 4) must be connected.
Jog drives without external jog buttons:
Jog drives are also possible without external jog buttons: For this, Bit 8 (
“Jog to larger
values
”) and Bit 9 (“Jog to lower values”) serve as the control word, the corresponding
key presses simulate these.
Prerequisite: Bits 4 and 5 of the control word must be reset.
(i) Devices with the "holding brake
”
option
The device types PSx3 0xIO-14, PSx3 1xIO-14, PSx3 2xIO, PSx3 3xIO are optionally
available with a holding brake. This brake prevents rotation of the output shaft in the
absence of motor power supply or if the motor holding torque is too low, up to a
maximum equal to the amount of the nominal torque. A small degree of rotation
always occurs at the output, i.e. the brake cannot be used to hold a defined position
(for this purpose, the holding torque must be increased with ISDU 155 and ISDU
154).
For drive orders, there is an initial wait for a short time for these devices for the
brakes to release (standard time 0.15 sec. before drive start, ISDU 164) and some
steps are travelled against the actual drive direction (number of steps: ISDU 136).
At the end of each drive, the brake is released (standard time 1 sec. after drive end,
ISDU 165). The advantage of this feature is, that in case of many subsequent runs
the brake has not to be released each time.
To adjust the position of the drive manually, it is first necessary to remove the rubber-
plug in the top cover (see drawings at the end of these instructions). Then release the
brake by pressing down and simultaneously turning using a hex wrench NW3 (PSx3
1xIO, PSx3 3xIO) or NW4 (PSx3 0xIO, PSx3 2xIO).
(j) Devices with the "Friction Brake
”
option
The device type PSE34xxIO is optionally available with a friction brake. This brake
prevents rotation of the output shaft in the absence of motor voltage or if the motor
holding torque is too low.
Summary of Contents for PS*3**IO series
Page 37: ...Instruction Manual PSx3xxIO 37...
