3-16 Installing the Drive
DC590+ DRV Series DC Digital Drive
Enable (C5)
On Frames 1 and 2, terminal C5 (ENABLE) is connected to terminal C9 (+24V). Internally, terminal C5 is connected in series with a normally open
auxiliary contact on the DRV main contactor.
On Frames 3 and larger, terminal C5 (ENABLE) is connected to terminal C9 (+24V) internally through a normally-opened auxiliary contact on the
DRV main contactor.
The drive remains disabled until the main contactor poles are closed.
WARNING
The drive must be disabled and power should be removed before servicing the equipment. First stop the drive
and make sure the main contactor has de-energized, then remove power.
Thermistor (TH1,TH2)
Connect the motor thermistor to terminals TH1 and TH2.
NOTE Terminals TH1 and TH2 must be connected together if the sensors are not fitted. This will prevent the drive from tripping the motor
temperature alarm (THERMISTOR). The alarm cannot be inhibited in software.
External Trip (C1, C2)
This terminal provides an external trip facility to any normally closed contact. For example, if the motor has an external blower motor, wire an
auxiliary contact from the blower starter's overload trip circuitry between terminals C1 and C2.
NOTE Terminals C1 and C2 must be connected together if an external trip is not used. This will prevent the drive from tripping the THERMISTOR
alarm. The alarm cannot be inhibited in software.
Program and Coast Stop (B8, B9)
For a regenerative emergency stop (regenerative units only) connect terminal B8 (PROGRAM STOP) to terminal C9 (+24VDC) through a normally
open contact of an emergency stop relay. Also connect terminal B9 (COAST STOP) to terminal C9 through a time-delayed off, normally open contact
on the same emergency stop relay. Activating the E-Stop circuit removes 24 VDC from B8 and regenerates the motor power back into the main
supply. The delayed-off contact on B9 (COAST STOP) acts as a fail safe, allowing the drive to coast to stop after the time delay.
For non-regenerative drives or for coast stopping with regenerative models, permanently connect together terminal B8 to B9 and connect terminal B9
to +24 VDC (terminal C9) through a non-delayed, normally-open contact of the emergency stop relay. Upon activating an emergency stop condition,
the drive will coast stop immediately.
WARNING
The emergency stop relay should not be considered part of the normal sequencing of the system and should be
triggered only in circumstances involving equipment damage or safety.
ENABLE
THERM
PROGRAM
STOP
COAST
STOP
EXT TRIP
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