3-12
Installing the Drive
DC590+ DRV Series DC Digital Drive
Dynamic Braking Option (DB+)
This option provides a limited braking ability, primarily for use as an emergency stop, by using the external contactor to switch a resistor across the
motor armature. The drive will dynamic brake if wired for coast stopping and a properly sized resistor is connected. In DRV Frames 3 and 4 through to
250Hp, the contactor includes a normally closed, dynamic braking DC contator pole rated to carry full load armature current upon closing.
NOTE
The enable input C5 must be True (24V) for the drive to run. If using the Dynamic Braking Option, remove the jumper across control
terminals C5, C9 on the drive.
The braking current rating of the contactor is 150% of armature current. Contact Parker SSD Drives for a range of resistors meeting NEMA ICS 3-
302.62.
The start-stop circuitry should be designed to prevent the motor from restarting and the pole from opening until
after
the motor reaches zero speed.
NOTE
The dynamic brake contactor pole is rated to make, but not interrupt DC motor current. To avoid damaging the contact, interlock the drive's
ZERO SPEED output signal to the DRIVE START logic to prevent the drive from restarting until the motor has reached standstill.
If in doubt about the connection of the DC motor to the drive check with Parker SSD Drives.
Motor Field Connections (F+, F-)
WARNING
The field bridge is supplied from the input side of the main contactor and is live whenever power is applied to the
drive. Remove power completely to isolate the field.
Connect the motor field (–) to terminal F– and field (+) to terminal F+ (Figure 3.3) for standard motors (300VDC fields on 500VDC armatures and
150VDC on 240VDC armatures are typical). If the motor requires a field supply greater than the drive can product, refer to the following External
Field Supply section.
For EMC, make screen connections, as shown in the relevant Connection Diagram at the end of this chapter, between the motor casing and a ground
connection on the DRV. Refer to Appendix B: "Certification" - EMC General Installation Considerations.
Make no connections to these terminals: if the motor has no field connections, if it is a permanent magnet motor, if the field is derived externally.
In these cases, you will be asked to set the FIELD ENABLE parameter to Disable during the set-up procedure in Chapter 4.
Summary of Contents for 590+ DRV
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Page 126: ...3 88 Installing the Drive DC590 DRV Series DC Digital Drive...
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Page 166: ...5 8 Control Loops DC590 DRV Series DC Digital Drive...
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Page 292: ...B 16 Certification DC590 DRV Series DC Digital Drive...
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Page 368: ...D 20 Programming DC590 DRV Series DC Digital Drive Functional Description...
Page 496: ...D 148 Programming DC590 DRV Series DC Digital Drive Programming Block Diagram Sheet 1...
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