7
CUSTOMER INSTALLATION, WIRING, & FUSING
REQUIREMENTS
•
Do not mount EZ VFD where ambient temperature is outside the range of -10 to 40°C (14 to 104°F).
•
Installations in unventilated enclosures must be 1.5 times the controller dimensions or more, and the air
temperature inside the enclosure and around the controller must remain between 10 to 40°C (14 to 104°F).
•
Keep signal wires separate
from the motor and AC lines when routed in conduit or wire trays.
•
These drives do not provide motor over-temperature sensing or shutdown. The need for additional motor and
motor over-temperature protection shall be determined based on conditions in the end installation in accordance
with the NEC.
•
Size all wires that carry motor or line currents as specified by applicable national, state, and/or local codes. All
other wires may be 18AWG or smaller as permitted by code.
Type
Customer Wiring Temp
Rating
Customer Terminal Wiring 300V, 75
o
C(167
o
F) minimum
•
Fusing
- The motor and control are protected against overloads by the current limit circuit, however this drive
does not contain AC line fuses. Most electrical codes require that each hot AC Line conductor contain circuit
protection. Install a fuse (See fusing chart below) or a circuit breaker in series with each hot AC Line. Do not fuse
any of the motor leads. For recommended fuse size, see the chart below.
•
The control and motor must be wired in accordance with the National Electrical Code requirements and other
local codes that may apply.
FUSING ADDED BY CUSTOMER (Bussman ABC or Little Fuse 326 Series fuses)
Factory Default Trimpot and Jumper Settings
Pot Board
Initial Trimpot Settings
The trimpots are factory set for a 0-60 Hz 1Hp inverter duty motor. The initial
settings are as follows:
MIN, BOOST, BRAKE Pots - Full CCW
CURRENT LIMIT Pot – 2/3 CW – 7 on the trimpot face (approx 3.4 A AC RMS)
DECEL, ACCEL, MAX – 1/4 CW - 2 to 3 on pot face
JP2
Jumper
JP2 – When set to READ the trimpots can be actively adjusted and tuned for the
users specific application. Every trimpot can be adjusted and tested while running
a motor. Once the drive has been tuned to the desired setting, those settings can
be stored to memory and locked by moving the jumper to the STORE position.
230 VAC 3
Motor Hp
115 VAC INPUT
230 VAC INPUT
1/4
6 AMP
4 AMP
2
1
/
6 AMP
4 AMP
1.0
12 AMP
8 AMP
®
ACCEL
DECEL
BRAKE
BOOST
CURRENT
LIMIT
MAX
MIN
JP2
STORE
READ
ACCELDECEL BRK
MAX
MIN
CUR_L
BOOST
