Kollmorgen MMC Smart Drive Series, Hardware Manual

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40 Kollmorgen - June 2014
MMC Smart Drive Hardware Manual
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SYSTEM POWER DEVICES
4.2 Protection
4.2.1 Motor Overload Protection
The Drives described in this manual utilize solid state motor overload protection in
accordance with UL508C that operates:
•
within 30 minutes at 125% overload
•
within 8 minutes at 200% overload
•
within 20 seconds at 600% overload
Motor parameters such as maximum motor current can be defined with PiCPro
Application Development software. The PiCPro manual can be found at
www.glcontrols.com.
4.2.2 Motor Thermal Protection
The Drives described in this manual do not provide motor over-temperature sensing,
unless a motor-mounted thermal device is connected to the Drive as described below.
In order to provide Motor Thermal Protection, and to meet the requirements of
UL508C, the following must be followed:
•
One of the following temperature-sensing devices must be installed in the motor:
•
A thermostat (normally closed, contacts rated at 10ma, 3.3VDC or greater).
The thermostat's contact will open when the motor's maximum operating tem-
perature is exceeded. Connect the thermostat between 0V and the Thermo-
stat input of the Drive's Feedback Connector.
•
A thermistor (rated at 10ma, 3.3VDC or greater; Philips KTY84-130 PTC or
equivalent recommended). The motor manufacturer will provide the motor's
maximum operating temperature. This temperature may be entered into the
Motor Temperature Parameters in PiCPro. Connect the thermistor output
between 0V and the Thermistor input on the Drive's Feedback Connector.
•
The temperature-sensing device must be properly connected to the drive, as
described in the MMC Smart Drive Hardware Manual that can be found at
www.glcontrols.com.
•
The temperature-sensing device must be properly configured in PiCPro (as
described in the PiCPro Manual and/or PiCPro on-line Help)