AMR LS-3000-220 Manual

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AMR INC. DESIGN & MANUFACTURING FOR MINING WORLDWIDE
P.O. BOX 234, ROCKY GAP, VA 24366
PHONE [phone]
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Email [email protected]
Visit our web site at www.americanmineresearch.com
AMR
LS-3000-220
BELT SLIP/SEQUENCE CONTROL
INSTALLATION AND SETUP
INSTRUCTIONS
12/2/98

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INSTALLATION
STEP 1
Select a suitable mounting location for the module. This should be as close
to the belt starter control box as possible to reduce the possibility of cable
damage.
STEP 2
Weld or otherwise attach a piece of ½” keystock or large nut to the roller
edge as shown in figure 1.
STEP 3
Using the clamp and bracket provided, position the module so that the
pickup face is as close to the keystock as possible without touching to
prevent wear. This distance should not exceed ½” or nuisance tripping may
result. Optimum distance is ¼”. An indicating light is built into the rear of
the module to check proper positioning and operation.
STEP 4
Route the cable back to the belt starter control box.
STEP 5
Make electrical connections as follows:
*Input Power (220 VAC): these two connections require constant 220 VAC
(+15%, -30%) at 3VA to run the LS-3000-220 circuitry. These connections
are made to the BLACK and WHITE wires. An in-line fuse holder, with a
250mA, 3AG fuse (AMR part number 270-0043) is provided, to be wired in
series with the Black wire. This fuse is used to protect the internal circuitry
of the module.

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*Control Contacts: These connections are wired in series with the control
line just as any other belt switch. In order to protect the wire, a 15-amp in-
line fuse should be installed in series with the GREEN wire. The switching
is done by a relay with either normally open (RED) or normally closed
(BROWN) contacts. Most control lines will need to be opened to shut down
the belt drive. In this case, connect the GREEN (common) and the RED
(normally open) wires in series with the control line. When the belt is
running above the preset point the GREEN and RED wires will be shorted.
A belt slip condition will cause these wires to open.
SETUP INSTRUCTIONS
STEP 1 – SPEED
Refer to Figure 2. Temporarily take a jumper wire and short out the control
wires (GREEN or RED) so that the belt will run. Start the belt. Turn the
speed adjustment fully counterclockwise. The red calibration light should
come on. Now start turning it clockwise until the light goes out. At this
point, you should back it counterclockwise about 1/8 turn to the point where
the light just comes on. If the belt slows from its present speed, the light
will go out, and the relay will drop out. Turning the speed adjustment
clockwise raises the cutoff point (faster). Turning it counterclockwise
lowers the cutoff point (slower).
STEP 2 – DELAY
Refer to Figure 2. The delay adjustment was set fully counterclockwise (no
delay) at the factory. A maximum of ten seconds’ delay can be set. Turning
the delay adjustment clockwise increases delay, while turning it
counterclockwise decreases delay. Delay starts when the calibration light
goes out. It is instantly reset when the light turns on.

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STEP 3
Remove the shorting jumper from the control wires (GREEN to RED). Start
the belt and observe the calibration light. It should be on solid (not
flickering). If not, you may need to re-adjust the speed adjustment or the
positioning of the module.
STEP 4
At the end of the module is a test switch that can be used to check that the
unit is functioning properly. This switch will short out the pick-up coil
thereby checking the entire circuitry. When you push the switch, the control
contacts should drop out and the belt should stop. ** Note that whatever
delay you have set will be present in this test.

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LS-3000-220
BELT SLIP/SEQUENCE CONTROL
WIRING IDENTIFICATION
*BLACK & WHITE – 220VAC INPUT
*GREEN ---------- RELAY COMMON
*RED-------------------------- RELAY NO
*BROWN----------------------RELAY NC