Bardac K340, K680, K1220 Users Manual

Model K340 / K680 / K1220 DC drive product manual HG502077 iss 4 1

K340 / K680 / K1220

DC Motor Controller
Product Manual

This drive is a speed controller for shunt wound or permanent magnet motors. It utilises speed
feedback from the armature voltage, or from a shaft mounted tachogenerator. It incorporates an
accurate current control loop to protect the drive and motor. The unit is a non-isolated component.
Please obtain expert help if you are not qualified to install this equipment. Make safety a priority.
This component is hazardous. (All specifications in this document are nominal).

POWER RATING

Versions that work from 60
K340i / LV60, K680i / LV60, K1220i / LV60. For motors rated up to 48V DC

V / 30V AC supply are also available.

MAXIMUM OUTPUT

AC SUPPLY INPUT

SPEED RANGE

USER ADJUSTMENTS

Maximum Speed (Max spd) 40 to 200V (armature volts or tach feedback volts)

Minimum Speed (Min spd) 0 to 30% of maximum speed
Ramp (Ramp) 20 to 1 seconds up ramp rate
IR compensation (IR comp) 0 to 30%
Max Current (I max) 0 to 100% current limit.

EXTERNAL CONTROLS

External RUN contact for electronic STOP/START
There is a pot kit including graduated dial and knob. Bardac Drives part numbe

Speed loop: Full P+I

CONTROL ACTION

Current loop: Full P+I current shunt feedback.

INSTALLATION

DOC# HG502077 iss4 21/06/05

K340 0.55KW (0.5 HP
K680 0.75KW (1.0 HP) at 180 Volts DC
K1220 1.8KW (2.0 HP) at 180 Volts DC

Armature: 200 Volts DC. 48V DC for LV60 models
Models K340/ K680 /K1220 --- 3.4/
Field:
(0.45 x AC for field connected to F- and N). 1 Amp.

110V AC or 240V AC +/-10%, 50–60 Hz.
30V AC or 60V AC +/-10%, 50-60Hz for LV60 models.

Speed range 0–100%. (motor dependant)
Load Regulation typically 0.2% tach, 2% Arm Volts.

Presets accessible under lift up cover.
Clockwise rotation for linear increase in parameter

LV60 models have an Avf range 10 - 50V.

Speed setpoint from external 10K Ohms pot.

Use correctly rated cable minimum 600V AC, 1.5 times
armature current.

Volts DC= 0.9 x AC supply volts. 1 Amp

armature voltage or tach feedback.

) at 180 Volts DC

6.8/ 12.2 Amps.

r. POTKIT-P.

2 Model K340 / K680 / K1220 DC drive product manual

FUSING REQUIREMENT

K680 DIN Mount Fuse Kit FLN-20, FLL-20
K1220 DIN Mount Fuse Kit FLN-20, FLL-20

Suitable for use on a circuit capable of delivering not more than 5000A RMS symmetrical amperes when protected by an Ar class fuse.

Bardac Drives semi-conductor fuse kits.
K340 DIN Mount Fuse Kit FLN-6.3, FLL-6.3

WARNING The drive can only be protected by fitting an external
AC supply semi-conductor fuse with an I

CONTROL SIGNALS

equipment. A common cause of damage is accidental earthing of the external pot or RUN contact
wiring. DO NOT TOUCH ANY CONNECTIONS TO THE UNIT.

MECHANICAL

the unit from pollutants. Ensure there is an adequate supply of clean cool air to ventilate the unit
and the enclosure it is mounted in. (Dissipation in Watts = 5 x Armature Amps).

MOTOR

Ensure accurate alignment of motor shaft with couplings. Do not hammer pulleys or couplings onto
the motor shaft.
Before running motor complete the following check list. (Warning isolate the supply first).

1) Correct insulation between all motor windings and earth. Disconnect all drive cables.

2) Check inside connection box for foreign objects, damaged terminals etc.

3) Check that brushes are in good condition, correctly seated and free to move in brush
boxes. Check correct action of brush springs.

4) Motor vents must be freed of any obstruction or protective covers prior to running.

5) WARNING for reversing systems. To prevent damage do not transpose the armature

connections until the motor has stopped rotating.

AC SUPPLY

PRESET POT settings

3.4A, K680 6.8A, K1220 12.2A). Fully anticlockwise is 0

50% ie 1.7A

Set all the other presets anticlockwise to start off with.

The preferred strategy for initial commissioning is in armature voltage feedback mode described as
follows. Set Avf/tach switch ON (left) for armature voltage feedback (AVF) and Spd x 2 switch
OFF (right) for 50V max feedback. For systems utilising tach feedback, remove the terminal 6 tach
connection.

. More accurate setting requires a suitable current meter in series with the armature

All control inputs to the drive are NON-ISOLATED. Do not
connect any of the terminals to earth or other non-isolated

The unit is designed to clip onto a DIN rail. Avoid vibration and
ambient temperatures outside –10 and +40C. Protect

Foot mounted motors must be level and secure. Protect motors
from ingress of foreign matter during installation.

To avoid damage, ensure the supply selection jumper on the
drive matches the incoming supply. 110V or 240V AC.

For models with LV60 suffix 30V AC or 60V AC.

Set the CURRENT preset to approximately match the motor
armature rating. Fully clockwise is 100% drive rating. (K340

2

t rating below 150 A2s.

%. E. g. for a K340 unit a midway setting is

.