128 Mentor MP Short Form Guide
www.controltechniques.com Issue Number: 5
10 UL listing
Mentor MP drives up to 575V 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
10.1 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 surrounding air temperature does not exceed 40°C when the drive is operating.
3. The terminal torques specified in the Mentor MP User Guide 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 section 4.6 Cable and fuse size
ratings on page 41 are to be used.
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.
10.2 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).
10.3 Maximum ratings
The drive models are listed as having the maximum rating current (FLC) shown in Table
2-2 and Table 2-3 in section 2.2 Current ratings on page 9.
To Next Page
Loading...
