Indexer User Guide

OEM650/OEM650X • INSTALLATION

Sizing Power Supply

Table 2-14 contains power ratings to help system designers size a

power supply. Combinations of motors and current levels other than

those shown may result in power values that are not recommended.

Connection

OEM57 motors may be configured in parallel or series. OEM83

motors must be wired in parallel. Refer to the OEM650 Quick Test.

Motor Size Motor Motor Heat + Drive Supply

(@75VDC) Current Avg. Shaft Power Heat Total**

OEM57-40-MOS 2.65A 56 Watts 9 Watts 65 Watts

OEM57-40-MOP 5.3A 56 Watts 19 Watts 75 Watts

OEM57-51-MOS 3.3A 75 Watts 11 Watts 86 Watts

OEM57-51-MOP 6.6A 75 Watts 25 Watts 100 Watts

OEM57-83-MOS 3.8A 86 Watts 13 Watts 99 Watts

OEM57-83-MOP 7.5A 86 Watts 31 Watts 117 Watts

OEM83-62-MO* 4.4A 113 Watts 15 Watts 128 Watts

OEM83-93-MO* 5.6A 133 Watts 20 Watts 153 Watts

OEM83-135-MO* 6.9A 155 Watts 27 Watts 182 Watts

S: Series Configuration P: Parallel Configuration

* 34 size motors are internal wired in Parallel ** User must supply this level of wattage

Table 2-14. Power Sizing

Use the following equation to determine drive heat.

Drive Heat

(Watts) = (0.31) (I

) + (1.13 I

) + 3 I

Motor Current

Calculations

❏ To convert watts to horsepower, divide by 746

❏ To convert watts to BTU/hour, multiply by 3.413

❏ To convert watts to BTU/minute, multiply by 0.0569

Motor Type

OEM650/OEM650X motors are custom-made for use with these

drives and drive/indexers. They are not available as a standard

model from any other manufacturer. These motors are designed for

low loss at rest and at high speed. Motors in the same frame size

from other manufacturers may sustain considerably higher iron

losses than an OEM650/OEM650X motor. OEM motors are wound

to render inductances within a range suitable for OEM Series prod-

ucts. If you do not use an OEM Series motor, you should consult

Compumotor's Applications Engineering Department for assistance

(800-358-9070). OEM650s/OEM650Xs are designed to run 2-phase

PM step motors only. Do not use variable reluctance or DC motors.