Valco Cincinnati VC3500, User Manual

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Installation
VC3500 User’s Manual
Valco Cincinnati 18
Example:
Using a 92-tooth split line shaft gear (driver), a 24-tooth encoder driven gear, a 500-pulse encoder, and 18 inches
(or 457 millimeters divided by 25.4) of travel per drive shaft revolution.
92 x 500 = 106.48
24 18
Therefore, the ratio compensation setting should be 106.5.
To install a gear-driven encoder (Figure 10), follow these steps:
1. Install the driver gear on the line shaft. Tighten the set-screws.
2. Position and install the encoder so that it is square with the driver gear.
3. Raise or lower the encoder to tighten the belt against the driver gear. (Ensure that the two sides of the belt are not
pressed together under the wheel.) Due to the low torque required, the belt should not be extremely tight.
Note! At least 7-9 teeth should engage in the line shaft driver gear. It may be necessary to fabricate an adjustable
bracket to connect the encoder base to the parent machine frame.
Electrical Installation of Encoder
A 12VDC encoder must be used with the VC3500 control. The cable used to connect the encoder to the control
should have a minimum of three conductors (18-22 AWG) and a shield.
To connect the encoder to the control, follow these steps:
1. Insert the encoder cable into the control enclosure through a cord grip located on the bottom panel of the control.
2. Connect the encoder to the three-terminal connector (located inside the control) labeled
“ENCODER”.
Figure 10. Typical Installation of a Gear-Driven Encoder
drive gear
minimum
7-9 teeth
line shaft (drive)
driven gear
machine base
machine base
adjustable mounting supplied by customer
Valco shaft encoder
11” (279 mm)