174
G R A H A M M O T O R S A N D C O N T R O L S V A R I S P E E D
®
A 2 0 0 0R E L I A B I L I T Y + C O M P A T I B I L I T Y S I N C E 1 9 3 5
(Clockwise increases maximum speed)
MAX SPEED may be adjusted from 50% of motor base speed to
approximately 115% of base speed.
1. With motor operating at full load, and the speed control knob
turned all the way to maximum, adjust the MAX SPEED trimpot
until desired speed is set. (NOTE: Extended motor speed can be
achieved with the trimpot. Caution should be taken not to
exceed maximum motor nameplate speed rating.)
2. Recheck MIN SPEED adjustment, as there may be ome
interaction.
(Clockwise increases current)
I-LIM may be adjusted from 0 to 150% of control rating.
There are two methods for adjusting I-LIM.
Method One:
1. Start the machine and apply maximum load to the motor, and
turn I-LIM trimpot fully clockwise.
2. Turn the I-LIM trimpot counter-clockwise until the I-LIM LED (red)
lights, and the machine starts to slow down.
3. Turn the I-LIM trimpot clockwise until the I-LIM LED just turns off.
Method Two:
1. Turn off AC power
2. Lock up the motor shaft, taking care not to cause damage.
3. Connect a DC ammeter in series with the motor armature.
4. Turn I-LIM trimpot fully counter-clockwise.
5. Turn speed pot fully counter-clockwise.
6. Turn on AC power and start control (red LED should be on).
7. Turn speed pot clockwise to about 1/3 speed setting.
8. Adjust I-LIM trimpot clockwise for desired motor current.
(Do not set for current greater than either the motor or control
nameplate rating.)
9. Turn off AC power, disconnect ammeter, and unlock motor shaft.
MAX SPEED ADJUSTMENT (MAX)
*Does not include motor field current where used.
**15% extended voltage capability standard.
The VariSpeed A2000 should be mounted horizontally in order to
insure maximum heatsink efficiency. With plate units, the plate
should be mounted directly against a 12 gauge metal panel
measuring at least 13 in. (330 mm) by 15 in. (380 mm).
CONTROL RATINGS CHART
>>
CURRENT (TORQUE) LIMIT ADJUST (I-LIM)
>
MOUNTING
>
On enclosed versions, over tightening cover
screws can damage mountings and cover gasket.
(Torque specs. 8-12 in. lbs.)
Control
Rating
HP
0.5
0.75
1.0
1.0
1.5
2.0
3.0
Control
Rating
Input
Voltage
120
120
120
240
240
240
240
Rated
AC Line
Amps*
10
15
20
10
15
20
23
Rated
DC
Armature
Voltage**
0-90
0-90
0-90
0-180
0-180
0-180
0-180
Armature
Current
Amps
6.8
9.6
12.2
6.1
8.3
10.8
16.0
Field
Current
Amps
1
1
1
1
1
1
1
Field
Voltage
50/100
50/100
50/100
100/200
100/200
100/200
100/200
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
To Next Page
Loading...
Need help?
General