Kollmorgen Digital MMC Control, Hardware Manual

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Kollmorgen - December 2011 31
MMC Smart Drive Hardware Manual
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INSTALLING THE MMC SMART DRIVE
The +24V power to the MMC Smart Drive is connected through a Phoenix 5-pin
connector with a plug-in terminal block. The ground from the power source and the
ground from the MMC Smart Drive must be connected to the Single-Point Ground
(SPG). Devices connected to the Drive I/O Port may have their own power sources for
input or output control signals provided that each one is:
• at the correct voltage and current levels for the module and the device.
• connected to the same Single-Point Ground that the MMC Smart Drive uses.
It is recommended that the same main disconnect switch be used for the MMC Smart
Drive and for all devices in the application.
3.13.2 System AC Power Wiring Guidelines
• Install a supply circuit disconnecting means.
• Install a Short Circuit Protective Device (SCPD).
• Due to high inrush current at power-up, use dual element time delay fuses for the
SCPD.
• Install additional device protection fusing (460V models). Only high speed type
fuses provide proper protection.
• Refer to the Specifications sections in Chapter 4 of this manual for device and
conductor requirements.
• Clamp the motor power cable shield to the drive using the Kollmorgen supplied
bracket. Maximum tightening torque for bracket screws is 10 lb-in.
CAUTION
A possible ignition hazard within the MMC Smart Drive exists if excessive
current is drawn from the 24 VDC powering the MMC Smart Drive. To pre-
vent this possibility (due to improper wiring or 24 VDC supply failure), a fuse
should be used in series with the 24 VDC to the MMC Smart Drive. Specifi-
cally, a 4 A max. “UL248 Series” fuse should be used. In addition, the 24
VDC shall be supplied by an isolating source such that the maximum open
circuit voltage available to the MMC Smart Drive is not more than 30 VDC.
IMPORTANT
No matter how the system is installed, before you connect the MMC Smart
Drive to the application, make sure that power is off to the system and to the
devices that are wired to the MMC Smart Drive.
NOTE
In addition to the guidelines listed below, follow all national and local electri-
cal codes and regulations.