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MMI-7xx Series
MMI-750T-HB, MMI-750T,
MMI-750, MMI-720
Installation Instruction
MMI-7xx Series ............................................................................................................................................ 1
1.0 Environmental Considerations ............................................................................................................ 1
2.0 Mounting Instructions ......................................................................................................................... 1
3.0 Power Connections.............................................................................................................................. 2
4.0 Communications Connections............................................................................................................. 6
5.0 Dip Switch Settings............................................................................................................................. 9
6.0 MMI Indicator Lights.......................................................................................................................... 9
7.0 Other Hardware Considerations .......................................................................................................... 9
8.0 Trouble Shooting............................................................................................................................... 10
9.0 Specifications .................................................................................................................................... 11
1.0 Environmental Considerations
See Specifications for environmental constraints.
Location
The MMI Series is designed for use in a factory environment. It is designed to operate
from 32 to 113 °F (0 to 45 °C) temperatures, as found in most industrial environments. It
may not be suitable for use in certain outdoor applications. Please consult the factory for
advised usage in outdoor applications.
NEMA
Rating
The MMI Series front bezel is NEMA 4 rated. When installed properly in a NEMA 4
panel, the NEMA 4 rating of the panel is not compromised. This means that fluids do not
enter the panel through the MMI series panel during wash downs.
Do not operate the unit in areas subject to explosion hazards due to flammable gases,
vapors or dusts.
The unit should not be installed where fast temperature variations and/or high humidity are
present. This causes condensation of water in the device.
Avoid installing units in environments where severe mechanical vibration or shocks are
present.
Vibration endurance: 10 to 25 Hz (X,Y,Z direction 2G 30 minutes)
2.0 Mounting Instructions
2.1 LOCATION CONSIDERATIONS
Care should be taken when locating equipment behind the unit to ensure that AC power wiring, PLC
output modules, contactors, starters and relays, and any other source of electrical interference are located
away from the back of the unit.
Particular note should be taken to the position of variable speed drives and switching power supplies.
Their input and load cables should be screened to a central star earth point.
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