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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
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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
WIRING (CONTINUED)INSTALLATION AND WIRING
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Branch circuit protection and Motor overload protection must be
provided by the equipment manufacturer or person installing the
controls per the National Electrical Code (NEC) and local codes.
This equipment should be installed, adjusted and serviced by
qualified electrical maintenance personnel familiar with the
construction and operation of this type of equipment and the
hazards involved. It is the responsibility of the equipment
manufacturer or person installing the controller to take diligent
care. Read this instruction manual and all warnings and notes
before proceeding to install or operate this control.
Improper installation of motor and
controller may cause equipment failure or
serious personal injury. Follow instruction
manual, local, state and national safety codes for proper
installation. Always disconnect power from the controller before
making any wiring changes or before inspecting equipment.
1. Shielded cable recommended but not required.
2. Be certain that a ground wire form the incoming AC power line
is properly connected to the chassis ground terminal provided.
Failure to properly ground the control and
motor may result in injury or death.
6. A 5K Ohm, 1 Watt rated speed potentiometer is provided with
each controller. On chassis versions, a knob and dial plate are
also provided.
7. An isolated process signal (0-10V) may be used instead of a
potentiometer by connecting signal leads between terminals 4
and 5 on TB3 with positive to terminal 4.
Be sure that the signal generated is isolated from ground, or the
A2000 and the process signal source will be damaged. For signals
that are ground referenced, the optional input signal isolator board
must be read.
8. For those applications requiring tachometer feedback the
tachometer should be rated for 21VDC per 1000 RPM (with a
1800 RPM motor).
9. When tach feedback is used, the RA resistor (see Component
Location drawing) must be removed.
10. S1 socket is provided for use with optional enclosures with
operators. Be sure that the ribbon cable is oriented as shown,
or equipment failure may result.
11. The TB3 terminal strip will accept wire sizes between #16 and
#24 AWG.
All terminals of TB3 are at line potential
and can be extremely hazardous. Power
must be removed from unit before any
wires are connected or disconnected. Wires connected to TB3 must
be isolated from ground. Failure to comply may result in injury,
equipment failure, or both. Contact with wiring or terminals while
power is applied may result in shock, injury, or death.
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