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MD100H Start Up Instructions
Wiring
This is for use by persons familiar with vfds and is intended to highlight details specfic to this model for the purpose of commissioning.
It is assumed personnel using this document are familiar with local code requirements for wire size & circuit protection,
the dangers associated with high voltage, and are capable of safely mechanically mounting the VFD.
1
Motor FLA can never exceed VFD output rating.
Check VFD nameplate to ensure compatibility. Confirm voltage is within the VFD input range.
2
Mounting clearances: 4" above and 2" from the sides of the enclosure. VFD must be mounted vertically to ensure adequate cooling.
For side by side installation remove top cover with a screwdriver. On models < 50HP allow 2mm" gap between each
M
D
100
H
, and allow a 50mm gap for 50HP and above.
3
Remove
front cover
(one bolt), and for easiest access remove cable guide (pressure points on each side and pull out).
4
Identify motor connections U,V,W (bottom right) and CONNECT motor leads, including the
ground wire
to the supplied ground lug.
5
I/O Terminal block functions -control wiring is shown below for the most common dry contact start / analog speed reference configurations.
Digital Inputs
Serial Input
Outputs
Default
P1 = fwd start/run
(CCW)
P2 = rev start/run
P3 = Emergency Stop
P4 = Alarm Reset
BACnet / Metasys N2
Dip Switches
(located just above I/O terminal)
SW1 = terminating resistor, on or off
SW2 = NPN/PNP
SW3 =
terminal input V1 or T1 (PTC- temp. sensor)
SW4 = terminal input , I2 or V2
Specs: 12V/12mA/1-10kΩ
SW5 = output terminal selection, VO or IO
6
Ensure supplied mains wiring is locked out / tagged out or otherwise disconnected. Use a meter to verify.
7
With control wiring complete, connect de-engerized line side power cabling to R(L1), S(L2), T(L3).
Double check at this time to ensure the ground wire from the building supply is firmly connected to both the inverter and earth ground.
Anytime after mains power is disconnected from VFD input terminals wait 10 minutes before removing any covers.
!
!
Analog Speed
Reference
Externally Sourced
0-10VDC or
4-20mA
Using internal
potentiometer
I2
Relay 1:
Run
Fault signal
Output
Relay functions available: 39
Frequency
Frequency
Multi function
common > Open Collector Output
0-32 kHz & 0-10VDC
0-32 kHz : 0–0.8 V or 3.5–12 V
100mA maximum, use
only for creating PNP
circuit
Summary of Contents for MD100H Series
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