Unidrive SP

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Power Accessories

INTERNAL DYNAMIC BRAKING RESISTORS

During deceleration, the mechanical energy stored in the spinning mass of the motor and load is converted to electrical energy, which recharges the drive’s DC bus. Dynamic braking resistors provide a means of rapidly dissipating that energy so that the drive does not fault from overcharging the DC bus. The ohmic value and power rating of the braking resistor is a function of the drive type and size.A zero-space braking resistor is available for heatsink mounting on Unidrive SP frame sizes 1 and 2. These resistors are designed for low-inertia loads commonly used in servo type applications. For higher-inertia loads, the heatsink mounted resistor may not have enough braking capacity, and a larger external resistor may be required. No thermal protection device is required with these heatsink-mounted resistor packages.
Control Techniques Unidrive SP AC Drive Opions. Size 1 Unidrive SP heatsink shown.
Size 1 Unidrive SP heatsink shown
Unidrive SP
Size
DC ResistancePower Rating Order Code
175 Ohm50WSM-Heatsink DBR1
237.5 Ohm100WSM-Heatsink DBR2
(Drives Larger than Size 2 do not have this option)

Control Techniques Unidrive SP AC Drive Opions. Emergency Stop Duty Dynamic Braking

E-STOP DUTY DYNAMIC BRAKING

Panel mounted DB resistors are designed for non-cyclic use where energy dissipation from an active drive is required. Resistors are supplied with mounting hardware unless otherwise noted.

See Options and Accessories section for details

Control Techniques Unidrive SP AC Drive Opions. Cyclic Duty Dynamic Braking

CYCLIC DUTY DYNAMIC BRAKING

These heavy-duty kits have been designed to provide dynamic braking for cyclic and continuous braking applications.

See Options and Accessories section for details

 

EXTERNAL EMC FILTERS

Control Techniques Unidrive SP Power Accessories, External EMC Filters.EMC filters are used to minimize high frequency power supply line disturbances caused by PWM AC drives that may interfere with proper operation of sensitive electronic equipment. These specific filters have been assessed for conformance with the EMC directive by testing with the appropriate Control Techniques drives. The filters used with Unidrive SP have been designed to mount in either Footprint or Bookend dimensions, allowing the user to optimize panel space.

See Options and Accessories section for details

Control Techniques Unidrive SP IP54 and IP55 Fan OptionsIP54 AND IP55 FAN OPTIONS

For those applications using through-panel mounting, and located in demanding enviornments, Unidrive SP can be fitted with optional fans providing either IP54 or IP55 Ingress Protection Ratings. The chart below lists the available fan options.

Unidrive SP
Frame Size
IP54 Fan Option
Order Code
IP55 Fan Option
Order Code
1
3251-4824
3251-3824
2
3251-4824
3251-3824
3
N/A
3251-1224
4
3251-7824
N/A
5
Standard
N/A
6
Standard
N/A

Some additional parts are required for installation of these fans. Please contact Control Techniques Technical Support for details.

Control Techniques Unidrive SP Encoder Terminal Connector.ENCODER TERMINAL CONNECTOR

The 15 way D-Type Converter is used to simplify motor feedback wiring by “Breaking out” the 15-pin D-connector signals to screw terminals.

DescriptionOrder Code
Encoder Screw
Terminal connector
SM-ETC

CONDUIT GLAND PLATES

New in 2005 and expanding in 2006 is the option of a conduit gland plate for Unidrive SP wall-mount drives. Currently, conduit mounting plates are available for Unidrive SP sizes 3, 4, and 5.

Unidrive SPModel NumberOrder Code
Size 3CBOX-S3960400-01
Size 4 and 5CBOX-S4-5960400-04

(Call factory for availability of conduit boxes for Unidrive SP sizes 1, 2 and 6)

Information provided by Control Techniques, a world leader in the design, production and marketing of electronic drives for the control of electric motors.

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