Owner manual

Pre-installation Planning

Verify the Application

MotorGuard Ratings

Make sure that the MotorGuard is correct for the application. The voltage and current ratings of the

MotorGuard must match the output voltage and current ratings of the connected variable frequency

drive as it is configured for use with the connected motor.

Variable Frequency Drive Settings

Make sure that the variable frequency drive will be set for operation modes and ranges that are

compatible with the MotorGuard:

♦ Maximum output frequency: 80 Hz

♦ PWM switching frequency between 2 kHz and 12 kHz, ideally 4 kHz to 8 kHz

♦ Mode of operation: "scalar" or "V/Hz" without DC braking unless the drive application has

been confirmed by TCI Technical Support

Select a Suitable Location

Environment

Locating the MotorGuard in a suitable environment will help ensure proper performance and a normal

operating life.

Warning

Unless specifically labeled as approved for such use, this equipment is not suitable for use in an

explosive atmosphere or in a "Hazardous (Classified) Location" as defined in article 500 of the

National Electrical Code.

The unit must be installed in an area where it will not be exposed to:

♦ Corrosive liquids or gasses

♦ Explosive or combustible gases or dust

♦ Excessive airborne dirt and dust

♦ Excessive vibration

In addition to the above, products that are not in a 3R enclosure should not be exposed to:

♦ Direct sunlight

♦ Rain or excessive dripping liquids

Mounting Area

Select a mounting area that will allow sufficient cooling air to flow through the unit. Adequate space

should be provided to allow access for maintenance.

Mounting an open panel unit

If you are mounting an open panel unit in your own enclosure, you must provide an enclosure that is

adequately sized and ventilated sufficiently to prevent overheating. The rating and dimension tables for

open panel units list the watts of heat loss that is dissipated by the MotorGuard. The maximum

temperature of the air around the MotorGuard's capacitors and monitor board should not exceed 50 °C

(104 °F).