Reliance electric MinPak Plus, Инструкция по эксплуатации

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overĆcurrent protection for the internal Power Cubes
containing the power semiconductors. It should not be
considered a proper main disconnect device.
Guideline 12 - It is necessary to connect the GND
(Green/ground) wire of the threeĆconductor incoming
aĆc line to the terminal provided on the Chassis. Ring
type connectors are recommended. The user must be
sure that the ground wire is connected to the plant
ground at the source.
The motor frame should also be grounded. In many
cases it is adequate to use a screw in the conduit box
near the motor.
Guideline 13 - A thermostat is used to guard against
motor overload protection, It is essential to properly
connect the motor thermostat to connections 34 and
132.
CAUTION: External overload devices must be conĆ
nected between terminals 32, 33, 34 and 132. The
drive will not start without them.
Refer to Figure 3.4 where a typical Operator's Station
schematic is shown.
Guideline 14 - When planning signal or control wire
runs, follow these practices:
Conduits should be steel.
If these conduits cross 460 VAC conductors, make
sure the cross is at 90
°
.
Do not route signal wires through junctions or
terminal boxes that contain nonĆsignal aĆc or dĆc
(115/230/460V) wires.
Guideline 15 - Operational altitude above sea level
may not exceed 3300 ft (1000 m). Derate horsepower
3% for each 1000 ft (300 m) above this altitude.
Figure 3.3 - Three Phase MinPak Plus Mounting
Dimensions
3.2 Mounting
- This Paragraph outlines the proceĆ
dures to be followed to mount the MinPak Plus controlĆ
ler.
Determine the exact placement of the Chassis on the
Panel. (Refer to Figure 3.3 for mounting dimensions.)
Scribe the panel. Drill three holes large enough to acĆ
cept #10 mounting bolts. Scrape the paint around the
holes to allow washers and bolts to make a ground conĆ
tact.
Choose four 3/8 inch lug bolts. The length depends
upon the depth of the entire mounting surface. Mount
controller using lug bolts.
3.3 Power Wiring
- This Paragraph briefly outlines
the procedures to be followed when wiring aĆc power supĆ
ply lines to the controller and dĆc control circuits to the
drive. A basic connection diagram is given at Figure 3.4.
DANGER
BEFORE WIRING, MAKE SURE THAT AĆC LINE
DISCONNECT SWITCH IS LOCKED OPEN.
EVEN IF POWER HAS NOT BEEN APPLIED TO
THE INCOMING LINE, THIS PRACTICE ASĆ
SURES PERSONAL SAFETY. IF NO LOCKOUT
DEVICE EXISTS, REMOVE THE FUSES WITH AN
INSULATED TOOL AND PLACE A WARNING
TAG ON THE BOX. IF THIS WARNING IS NOT
OBSERVED PERSONAL INJURY MAY RESULT.
All interconnecting wire should primarily be sized and
installed in conformance with N.E.C., C.E.C. or local
codes. Refer to the controller and motor nameplates for
electrical data. Note that long cable runs may require
that a larger gauge be used to avoid excessive voltage
drop. Use of stranded wire, up to 19 strand, is also recĆ
ommended. Wire according to Figure 3.4.
After wiring, examine all terminals to determine that conĆ
nections are correctly made at both ends. Confirm wire
identification. Examine the firmness of the connections.
WARNING
DO NOT ALLOWCONDUCTORS TO GROUND
ON THE CHASSIS. CHECK INTEGRITY OF ALL
WIRE INSULATION BEFORE DRAWING. REĆ
MOVE ONLY ENOUGH INSULATION TO MAKE A
FIRM TERMINAL CONNECTION. PERSONAL
INJURY COULD RESULT IF A BARE WIRE
TOUCHES THE CHASSIS.
3.4 Isolation Transformers
- Although an autoĆ
transformer may be required because of aĆc line voltage
levels, it is unable to provide a number of benefits stanĆ
dard with an isolation transformer.