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176 Mentor MP User Guide
www.controltechniques.com Issue: 3
14 UL information
Mentor MP frame size 1 drives have been assessed to comply with both
ULus and cUL requirements.
Control Techniques UL file number is E171230. Confirmation of UL
listing can be found at website: www.ul.com
14.1 Common UL Information
Conformity: The drive conforms to UL listing requirements only when the
following are observed:
1. The drive is installed in a type 1 enclosure, or better as defined in UL
50.
2. The ambient temperature does not exceed 40°C when the drive is
operating.
3. The terminal torques specified in section 3.9.3 Torque settings on
page 30 are to be used.
4. The power terminal lug used to crimp the, I/P & O/P cables are to be
UL listed.
5. The drive is to be installed in to a pollution degree 2 environment.
6. If the drive control stage is supplied by an external power supply,
(+24V), the external power supply must be a UL class 2 power
supply.
7. Fuses sized as specified in the various tables in Chapter 4 Electrical
installation on page 32 are to be used. Fusing is to incorporate a
Class J fuse in line with a semiconductor fuse as specified.
8. Field wiring is to be class 1 75°C (167°F) copper wire only.
Motor overload protection
All models incorporate an internal overload protection model for the
motor load that does not require the use of an external or remote
overload protection device.
The protection level is adjustable, and the method of adjustment is
provided with the instructions for the product.
Maximum current overload is dependant on the values entered into the
current limit parameters (motoring current limit, regen current limit and
symmetrical current limit entered as percentage) and the motor rated
current parameter (entered in amperes).
The duration of the overload is dependant on motor thermal time
constant (variable up to a maximum of 3000 seconds). The default
overload protection is set such that the product is capable of 150% of the
current value entered into the motor rated current parameter (Pr 5.07
(SE07, 0.28)) for 30 seconds (20 seconds for MP470A4(R),
MP470A5(R), MP825A5(R) and MP825A6(R). The product also
provides user terminal default functionality such that the product can be
connected to a motor thermistor to protect the motor in terms of
temperature, in the event of a motor cooling fan failure.
Over speed protection
The drive provides overspeed protection. However it does not provide
the level of protection afforded by an independent high integrity
overspeed protection device.
14.2 AC supply specification
The maximum UL supply voltage is 600Vac.
The drive is suitable for use in a circuit capable of delivering not more
than 100,000rms symmetrical Amperes at 575V (size 1A and 1B).
14.3 Maximum continuous output current
The drive models are listed as having the maximum continuous output
currents (FLC) shown in section 2.1 Ratings on page 6.
14.4 Safety label
The safety label supplied with connectors and mounting brackets must
be placed on a fixed part of the drive enclosure where it can be seen
clearly by maintenance personnel for UL compliance.
The label clearly states "CAUTION risk of electric shock power down at
least 10 minutes before removing cover".
14.5 UL Listed accessories
• SM-Keypad • MP-Keypad
• SM-DeviceNet • SM-PROFIBUS-DP-V1
• SM-INTERBUS • SM-CANopen
• SM-Ethernet • SM-EtherCAT
• SM-Register • SM-Applications Lite-V2
• SM-Applications Plus • SM-Universal Encoder Plus
• SM-Encoder Plus • SM-Encoder Output Plus
• SM-I/O Plus • SM-I/O 32
• SM-I/O Lite • SM-I/O Timer
• SM-I/O PELV • SM-I/O 120V
• SM-I/O 24V Protected • 15-way D-type converter
• Single ended encoder interface
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