Ormec MMI8104, MMI8070, MMI8080, MMI8121, MMI8100 Installation Instructions Manual

MMI8000 Series

MMI8056, MMI8070, MMI8080, MMI8100, MMI8104, MMI8121

Installation Instructions

1.0 Installation and Startup Guide

Install Environment
Where Used

The MMI8000 Series is designed for industrial environments. The operating temperature range is 32 to 113 °F (0
to 45 °C). It may not be suitable for using in certain outdoor applications. Please consult the factory for advised
usage in outdoor applications.

NEMA Rating

The MMI8000 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 during wash downs.

Electrical Environment

The MMI8000 Series has been tested to conform to European CE requirements. This means that the circuitry is
designed to resist the effects of electrical noise. This does not guarantee noise immunity in severe cases. Proper
wire routing and grounding insures proper operation.

Mechanical Environment

Avoid installing units in environments where severe mechanical vibration or shocks are present.

2.0 Installation Instructions

2.1 Mounting Instructions

2.1.1 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.

Take particular note as 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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2.1.2 Making a NEMA-4 Mounting

Panel Details

The unit can be mounted into panels with a depth of 4”(105mm). It is recommended that the unit be mounted on
the front panel of a steel enclosure, through an appropriate opening*.

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Allow a clearance of 1”(25mm) around the sides of the unit for mounting hardware.
Allow clearance for cable connections to the back of the unit.
Unit depth may vary according to cable type used. Typically, plan a depth to accommodate at least

4”(105mm) behind the panel.

NEMA-4 Mounting

Put the unit through the panel cut out. Slide the clamps into the 6 holes provided around the case. Tighten the
clamping screws in an even pattern until the unit is secured in the panel.

Caution! Do not over tighten mounting clamps!

Note: Specifications To seal to NEMA-4 specifications, all supplied mounting clamps must be used and panel
cannot flex more than 0.010”.

2.1.3 Environmental Considerations

The MMI8000 Series units are designed for indoors use as built in displays. Make sure that the displays
are installed correctly and that the operating limits are followed (See Specifications).

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Do not operate the unit in areas subject to explosion hazards due to flammable gases, vapors

or dusts.

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The unit should not be installed where fast temperature variations and/or high humidity are

present. This causes condensation of water in the device.

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Do not install these terminals in environments where inflammable gases are present.

2.2 Power Connections

Make sure that all local and national electrical standards are met when the installing the unit.
Contact your local authorities to determine which codes apply.

2.2.1 Power Requirements

MMI8000 units are powered by DC power only. The specified voltage range is 24±5% Volts DC.
This insures compatibility with most controller DC systems.

Power

Fusing
Requirements

High Voltage
Caution

Caution
Emergency
Stop

The power conditioning circuitry inside the unit is accomplished by a switching power supply.
The peak starting current can be as high as 700mA.

If the display does not come on within 2 seconds of power up, remove power. An internal fuse
prevents damage if the polarity of the DC power is incorrect. Check wiring to insure proper
connections and try to power up again.

An Internal fuse prevents damage for over voltage condition however it isn’t guaranteed.

DC voltage sources should provide proper isolation from main AC power and similar hazards.

A Hard-wired EMERGENCY STOP should be fitted in any system using an MMI8000 to comply
with ICS Safety Recommendations.

Do not power the MMI8000 and inductive DC loads, or input circuitry to the controller, with the
same power supply.

Caution
Supply Voltage

Note: The 24 VDC output from
MMI8000.

some controllers may not have enough current to power the

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Wire lengths should be minimized (Maximum 1600’ (500 m) shielded, 1000’ (300 m)
unshielded).

Caution Wire
Routing

Wires should be run in pairs with a neutral or common paired with a hot or
signal line.
If wiring is to be exposed to lightning or surges, use appropriate surge
suppression devices.
Keep AC, high energy, and rapidly switching DC wiring separate from
signal wires.
Equip ungrounded DC supplies with a resistor and capacitor in parallel to earth ground. This
provides a path for static and high frequency dissipation. Typical values to use are 1MOhm and
4700pF.

Connection

To make a connection, strip about 3/8” of insulation off the end of the wire, turn the connector
screw counterclockwise until the gap is wide open, insert the wire all the way in, and turn the
screw clockwise until it’s tight.

Connect positive DC line to the ‘+24V’ terminal and the DC ground to the
‘0V‘ terminal.

2.2.2 Grounding Requirements

Chassis ground must be used. DC ground is not directly coupled to Earth ground internally. It is
preferable not to ground DC negative return to chassis ground as poor site earths can introduce
noise into a system, but if necessary an earth connection should be made, from the power supply
return point to the central star earth point. Ground conductors should be as short and as large in
size as possible. The conductors must always be large enough to carry the maximum short circuit
current of the path being considered. Ground conductors should be connected to a tree from a
central star earth ground point. This ensures that no ground conductor carries current from any
other branch.

2.2.3 CE Requirements

To make an MMI8000 comply with EMC directives, and to reduce susceptibility to electrical
interference, a separate #14 AWG ground wire should be taken to the chassis ground terminal of the
power connector. This ground connection should be run directly to the central star earth connection
point (as recommended in most Installation Instructions).

2.2.4 Safety Guidelines

This section presents recommended installation practices, and procedures. Since no two
applications are identical, these recommendations should be considered as guidelines.

WARNING!

The system designer should be aware that devices in Controller systems could fail and thereby

Hardware
Considerations

create an unsafe condition. Furthermore, electrical interference in an operator interface, such as
an MMI8000, can lead to equipment start-up, which could result in property damage and/or
physical injury to the equipment operator.

If you, or your company, use any programmable control systems that require an operator or
attendant, you should be aware that this potential safety hazard exists and take appropriate
precautions. Although the specific design steps depend on your particular application, the
following precautions generally apply to installation of solid-state programmable control devices.
In addition, these precautions conform to the guidelines for installation of Controllers as
recommended in the NEMA ICS 3-304 Control Standards.

Programming
Considerations

To conform with ICS Safety Recommendations, checks should be placed in the controller to
ensure that all writable registers that control critical parts of plant or machinery have limit checks
built into the program, with an out-of-limit safe shut down procedure to ensure safety of
personnel.

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