Except as noted below, do not use an output contactor for the purposes of starting
and stopping a motor - this will damage the drive and void the warranty.
I. Contactors
A contactor may be used to open the input power to the drive to provide drive isolation for service and repair. An output contactor may only be
used to isolate the drive when interlocked utilizing the drive program for multi-motor control or bypass (exchange) operation.
Please refer to installation precautions in the P-Series Installation Manual.
II. Mounting & Installation
Incorrect terminal wiring could result in equipment damage. Temperature in the cabinet or where the drive is installed should be between 14 °F
and 104 °F non-condensing. Temperatures outside this range will damage drive. Temperatures up to 122 °F are possible with 20% derating.
To reliably operate the inverter, install the inverter in the proper orientation and with recommended clearances.
III. Motor Disconnect
The drive must be stopped before operating a motor disconnect.
If possible wire an auxiliary contact to the drive terminals BX to interlock the drive and prevent inadvertent damage.
RECOMMENDED
RECOMMENDED.
(REQUIRED IF POWER
SOURCE <50FT. FROM VFD)
NOT REQUIRED
REQUIRED
AUX.
SURGE SUPPRESSOR
RECOMMENDED
An input line reactor and lightning surge arrestor must be used to
provide protection when the drive is directly connected to a utility
input source. They are recommended in all other cases.
IV. AC Power Source
Input power must be +10/-15% of drive rated voltage for proper operation.The drive
cannot produce output voltage higher than the input power voltage. The input to the
drive must have surge voltage and high voltage protection.
Please refer to Appendix A and B of the drive manual
for recommended fuse ratings, contactor, and breaker
ratings. When used with UL listed breakers the P Series
drives have a UL listed input interrupting capacity rating of
65,000 Amps.
V. Short Circuit Protection
& Disconnect
An input reactor must be used when the drive is
directly connected to utility power or when the
input power source is more than 10 times the KVA
rating of the inverter.
VI. Input Line Reactors
Please call Franklin for proper sizing and application of a line reactor
on the drive input. When properly sized and applied, an input line
reactor will reduce input power harmonics, improve power factor, and
increase drive protection.
Do not connect power factor capacitors, surge
arrestors or noise filters to the output of the inverter.
This will void the warranty
VII Wiring Output to Motor
Please follow all wiring precautions as noted in the drive manual.
Wiring length from the drive to the motor should be short enough to
prevent insulation breakdown in the motor due to high voltage. Please
call Franklin if the motor leads are longer than 100 feet for application
recommendations. Long motor leads will require an output line reactor
or output filter.
22985 NW Evergreen Pkwy
Tel: 800.962.3787 • Fax: 503.643.4925
www.franklin-controls.com
The maximum ambient temperature for a stand alone drive is 40 °C (104 °F) or 50 °C (122 °F) for 20% up sized drive. Here are some
recommendations to help keep your drive “cool”:
1.
Derating for Temperature:
If stand alone VFD is installed on the wall with the maximum ambient temperature exceeding 40 C or 104 F or VFD is
mounted in ventilated enclosure with ambient temperature exceeding 33.3 C or 92 F (non-direct sun), the VFD should be up sized 20% .
2.
Reduce the heat load on the Drive:
Mount the drive away from direct sunlight or any other source of heat.
3.
Exhaust and Intake Clearance:
Make sure the drive is mounted in a place where the intake and exhaust air is free from obstructions and the
intake air is not near another heat source such as transformers or heating elements. Never install one drive such that the exhaust from one blows
into the intake of another.
4.
Mount the drive in a Separate Enclosure:
A simple step that can save a lot of headaches is to mount the drive separately from other heat
generating electrical equipment. Just a few extra devices in an enclosure can add significant heat that can push the internal ambient temperature
of the cabinet beyond what is acceptable for the drive.
Terminal “N” is not a neutral, it is negative of the DC bus.
Do not wire anything but Dynamic Braking Unit to “N” terminal.
A
MBIENT TEMPERATURE:
The proper grounding is very important for VFD operation. If metal construction or conduits are used as a ground leak current path, the VFD can
have inadequate grounding and ground fault protection. Most problems with grounding are in remote locations (like an irrigation pump) or isolated
installations such as cranes or roof tops for HVAC. There are three critical things to remember about grounding your drive:
1.
Size of the ground cable:
The ground bonding cable must be the proper size to meet the impedance requirements as specified in our manual.
A good practice is to use the size of your power input.
2.
Dedicated, direct cable:
The grounding cable should be dedicated and as short as possible from the bonding point. Longer cable runs will
require larger cable to meet the impedance requirements. This is where following the recommendations above will serve you well. Under no
circumstances should you use a mechanical connection such as conduit or electrical cabinets for your ground source.
3.
Bonding to the source input:
Ideally the grounding and source input are electrically connected such as when there is an isolation transformer
with a neutral to ground bonding point. Refer to the drive manual on pages 3-8 for minimum grounding conductor sizes and specifications.
B
ONDING:
The following bonding methods are not acceptable: Mechanical ground through conduit or through metal chassis, isolated or floating
ground systems, grounding through neutral wires, corner grounded delta (call Franklin for recommendations).
INSTALLER: PLEASE READ AND FOLLOW THESE INSTALLATION GUIDELINES
Clean Power:
The drive will need to be protected from input power problems and load related power issues (mainly due to long cable runs).
There are unique issues regarding both input power and output power protection (see notes regarding input reactors, load reactors, and surge
suppressors below.)
Correct Sizing:
How your drive performs is dependent upon sizing the drive properly for the application. Your load is either constant torque or
variable torque. Most Franklin drives are dual rated - the variable torque rating is always higher capacity than the constant torque rating. Here are
some examples of variable and constant torque applications:
C
LEAN POWER, CORRECT SIZING, & CLEAN AIR:
When sizing a drive you also must consider the inertia of the load. High inertia loads are hard to accelerate and decelerate. This resistance to speed
change can cause the drive to trip out on DC overvoltage, as the inertia from the load reverses into the drive and causes the DC bus voltage to rise.
When this happens the drive will trip on an overvoltage fault. Resetting the fault and putting the drive back in operation in this situation will void
your warranty if done repetitively. In all such cases a DC braking unit should be used. DC braking units are standard on many of our small drives
and are optional on all of our larger drives.
Clean Air:
A drive that becomes coated with dust or debris cannot cool itself properly and will lead to premature failure of the drive. Make sure the
drive has clean, dry air for cooling. If it is installed in an enclosure make sure to replace the air filters once a month to make sure the drive runs at
peak performance.
Correct Settings:
To protect your drive and to ensure proper operation, follow our quick start guide which includes settings for most applications.
Constant
Conveyer Belt, Mixer, Grinder, Lathe
Variable
Fan, Pump
High Inertia
Oil Pump Jack Centrifuge, Any Flywheel, Crane and Hoist
QSTART-PUMP-M1700
Version 7