Instruction Manual PSx3xxMod
8
If the device names are given
without
the diameter of the output shaft (8,
14), the relevant information is valid for
all
offered output shafts (applies
throughout the document).
‘x’ in the device name stands for a number in the range 0..9. ‘xx’ in the
device name stands for a number in the range 10..999.
Important: Always reinsert the protective cap after setting the
address. This will prevent dust and contaminants from entering the
device.
2.5 LEDs
The green LED represents the state of the motor supply voltage, the red and yellow
LED represent the Modbus and the device state.
Yellow LED
Switched ON during frame reception or sending.
Red LED
Switched ON: internal fault
Flashing: Other faults
Green LED
Switched ON: device powered (motor supply)
2.6 Start-up
Positioning sequence (with loop)
The PSx3xxMod differs between the following steps of a positioning sequence
(Presumption: the target position is always approached through forward motion):
1.
New position value is larger than the current value: position approached directly.
2.
New position value is smaller than the current value: the device reverses 5/8 of
one rotation and approaches the exact position after resuming forward motion.
3.
New position value after reverse run without loop: the device always approaches
the position by moving in forward direction; if necessary, it will first reverse by 5/8
of a rotation.
Once the target position has been reached, the device compares it to the internal
absolute encoder status. If a discrepancy is detected, t
he device then sets the “error”
bit (bit 9 in the status word).
Positioning sequence (without loop)
The “positioning without loop” mode is used primarily for moving the small distances
involved in fine adjustments. In this case, each position is approached directly. This
does NOT eliminate any play present in the spindle in question. The PSx3xxMod
internal gear backlash does not play a role in this case, as position data are acquired
directly at the output shaft.
