TECHNICAL MANUAL FOR THE RDR BL3 - V1.1 DRIVE ROLLER Rev. 21/09/2018 page 29
9.4 Reversal of direction of Drive Roller
The direction of the Drive Roller can be changed by sending a +24 VDC signal (red wire) to the "Direction" input
(green wire).
Changing signal status, from a low signal (0V-GND), or not connected, to a high signal (+24 VDC) enables the
integrated electronics to know when the motor has to change rotation direction.
By default, the non-connected GREEN wire has the low level 0V GND and the Drive Roller rotates anticlockwise
(seen from the cable output side).
The green wire can be connected directly to the red wire (+24VDC) by a fixed bridge, if the Drive Roller always
has to rotate in the same clockwise rotation direction from when it is switched on and starts.
WARNING:
- NEVER change the rotation direction of the Drive Roller when the roller is still moving. Wait for the
Drive Roller (and the material conveyed by it) to stop completely before changing rotation direction.
Noncompliance with this point could cause the Drive Roller electronics to be broken and/or reduce the
reduction gear's working life.
Drive Rollers returned with such faults are not covered by warranty.
- If the direction change signal is managed by PLC or another sort of relay logic, the direction changes
or setting signal must be sent before the motor START signal. NEVER send the direction change signal
at the same time as the motor START signal. Noncompliance with this point could cause the motor to
start in the wrong direction and then almost immediately reverse its rotation direction automatically.
- NEVER send a voltage signal below 7V to the “Direction” input; below this threshold the direction
change might not take place correctly.
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