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UL Listing
Unidrive M100 / M101 Control User Guide 97
Issue Number: 1
12 UL Listing
12.1 UL file reference
All products covered by this Guide are UL Listed to both Canadian and
US requirements. The UL file reference is: NMMS/7.E171230.
12.2 Option modules, kits and accessories
All Option Modules, Control Pods and Installation Kits supplied by
Emerson Industrial Automation for use with these drives are UL Listed.
12.3 Enclosure ratings
Drives are UL Open Type as supplied.
Drives fitted with a conduit box are UL Type 1.
12.4 Mounting
Drives can be mounted directly onto a vertical surface. This is known as
'surface' or 'standard' mounting. Refer to relevant Power Installation
Guide for further information.
Drives can be installed side by side with recommended spacing between
them. This is known as 'bookcase' mounting. Refer to relevant Power
Installation Guide for further information.
Drives fitted with a conduit box can be mounted directly onto a wall or
other vertical surface without additional protection. Suitable conduit
boxes are available from Emerson Industrial Automation.
12.5 Environment
Drives must be installed in a Pollution Degree 2 environment or better
(dry, non-conductive pollution only).
All drives are capable of delivering full rated output current at
surrounding air temperatures up to 40 °C.
Drives may be operated in surrounding air temperatures up to 50 °C or
55 °C at de-rated current, depending on the model number. Refer to
relevant Power Installation Guide for further information.
12.6 Electrical Installation
TERMINAL TORQUE
Terminals must be tightened to the rated torque as specified in the
Installation Instructions. Refer to relevant Power Installation Guide for
further information.
WIRING TERMINALS
Drives must be installed using cables rated for 75 °C operation, copper
wire only.
UL Listed closed-loop connectors sized according to the field wiring shall
be used for all field wiring connections. Refer to relevant Power
Installation Guide for further information.
BRANCH CIRCUIT PROTECTION
The fuses and circuit breakers required for branch circuit protection are
contained in the Installation Instructions. Refer to relevant Power
Installation Guide for further information.
OPENING OF BRANCH CIRCUIT
Opening of the branch-circuit protective device may be an indication that
a fault has been interrupted. To reduce the risk of fire or electric shock,
the equipment should be examined and replaced if damaged. If burnout
of the current element of an overload relay occurs, the complete
overload relay must be replaced.
Integral solid state short circuit protection does not provide branch circuit
protection. Branch circuit protection must be provided in accordance
with the National Electrical Code and any additional local "codes".
DYNAMIC BRAKING
Drives with model numbers beginning M100, M101, M200, M201, M300
or M400 have been evaluated for dynamic braking applications.
12.7 Motor overload protection and
thermal memory retention
All drives incorporate internal overload protection 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 in section 8.4 Motor thermal protection on page 38. Maximum
current overload is dependent on the values entered into the current limit
parameters (motoring current limit, regenerative current limit and
symmetrical current limit entered as percentage) and the motor rated
current parameter (entered in amperes).
The duration of the overload is dependent on motor thermal time
constant. The time constant is programmable. The default overload
protection is typically set to 150 % of the motor rated current for 120
seconds.
The method of adjustment of the overload protection is provided in the
Installation Instructions shipped with the product.
All models are provided with thermal memory retention.
12.8 Electrical supply
The drives are suitable for use on a circuit capable of delivering not more
than 10,000 RMS Symmetrical Amperes, at rated voltage when
protected by circuit breakers as specified in the Installation Instructions.
12.9 External Class 2 supply
The external power supply used to power the 24 V control circuit shall be
marked: "UL Class 2". The power supply voltage shall not exceed 24
Vdc.
12.10 Group Installation and Modular
Drive Systems
Drives with DC+ and DC- supply connections, with 230 V or 480 V
supply voltage rating, are UL approved for use in modular drive systems
as inverters when supplied by the converter sections: Mentor MP25A,
45A, 75A, 105A, 155A or 210A range manufactured by Emerson
Industrial Automation.
Alternatively, the inverters may be supplied by converters from the
Unidrive-M range manufactured by Emerson Industrial Automation.
In these applications the inverters are required to be additionally
protected by supplemental fuses.
Drives have not been evaluated for other Group Installation applications,
for example where a single inverter is wired directly to two or more
motors. In these applications, additional thermal overload protection is
needed. Contact Emerson Industrial Automation for further details.
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