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5.7 Power Take-Off
Reference the BSC installation and maintenance manual for the model type of the
driven conveyor (RLCAC or RLSAC) for detailed PTO installation instructions.
1. If the conveyor has a power take-off unit, the tail section will have a special extended shaft tail
pulley, and the conveyor will ship with a power take-off kit.
a. Reference the system layout drawings to mate this power take-off kit to the driven
conveyor, which will be a different mark number.
2. Install and set the driven conveyor before beginning to install the power take-off kit. Reference
the installation manual for the appropriate model type of the driven conveyor.
3. If the driven conveyor also has a separate power take-off timing pulley, install it before installing
the power take-off timing pulley on the driving conveyor. If the driven conveyor ships with the
driven timing pulley installed, proceed to the next step.
4. Ensure the tail pulley is square to the conveyor frame before proceeding. Any adjustments made
to the tail pulley or tail assembly will also affect squareness and belt tension on the power take-
off.
5. Install the timing pulley (38) and key on the extended tail shaft. See Figure 27: General
Arrangement, RZPAC Tail, Sheet 1 of 1 in section 9.
6. Use a straight edge to align the timing pulley on the extended tail shaft with the timing pulley on
the driven conveyor.
7. Torque the bushing bolts according to the procedure in the PPI bushing installation guide.
8. Reference the BSC RLCAC or RLSAC Installation and Maintenance Manuals for details on PTO
tensioner installation and belt tensioning. Installation procedure will vary slightly depending on the
model type of the driven conveyor.
9. Install the PTO guard.
5.8 Electrical Installation
5.8.1
AC Motor Installation
1. The conveyor is equipped with a single AC gearmotor, which is typically specified for 230V/460V
3 phase at 60Hz.
Check the motor nameplate/wiring diagram and verify correct winding tap connections
for the available operating voltage, prior to any electrical install.
2. For Dodge gearmotor electrical maintenance and installation instructions, refer to document
Dodge Quantis RHB Installation and Maintenance Instructions (499322).
Verify correct phase rotation. The conveyor is not designed to run backwards and belt
tracking or belt tension issues may result. Correct rotation direction is as shown in
Figure 11: Screw Takeup Drive Belt Routing for screw takeup drives, or Figure 13:
Pneumatic Takeup Drive Belt Routing for pneumatic takeup drives.
3. The drive motor may be controlled with a VFD, or may be connected directly to line voltage. If a
VFD is used, obey the motor manufacturer's listed deratings for operation at speeds other than
60Hz. Contact BSC for more information if needed.
4. If a VFD is used in a closed-loop ("vector") control mode, verify the VFD is tuned to the conveyor
system once the belt is tensioned. Longer conveyors have a significant amount of elasticity in the
belt span, and this may cause undesirable oscillation when speed or load changes suddenly.
Published November 2021
Installation and Maintenance Manual: RZPAC
Rev. B
33
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