2
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 ~ 9 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
Note: 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
z
The MT-8000 are to be used indoors as built in displays. Make sure that the displays are
installed correctly and that the operating limits are followed (See Specifications).
z
Do not operate the unit in areas subject to explosion hazards due to flammable gases,
vapors or dusts.
z
The unit should not be installed where fast temperature variations and/or high humidity
are present. This will cause condensation of water in the device.
z
Do not install these terminals in environments where have inflammable gases.
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
Power
The MT-8000 can be powered by DC power only. The specified voltage
range is 24±5% Volts DC. This insures compatibility with most controller
DC systems.
The power conditioning circuitry inside the unit is accomplished by a
switching power supply. The peak starting current can be as high as 700mA.
Fusing
Requirements
If the display does not come on within 2 seconds of power up, remove
power. An internal fuse will prevent damage if the polarity of the DC power
is incorrect. Check wiring to insure proper connections and try to power up
again.
Caution
High Voltage
An Internal fuse will prevent damage for over voltage condition however it
isn’t guaranteed.
DC voltage sources should provide proper isolation from main AC power
and similar hazards.
Caution
Emergency
Stop
A Hard-wired EMERGENCY STOP should be fitted in any system using an
MT-8000 to comply with ICS Safety Recommendations.
Caution
Supply Voltage
Condition
Do not power the MT-8000 and inductive DC loads
, or input circuitry to
the controller, with the same power supply. Note: The 24 VDC output from
some controllers may not have enough current to power the MT-8000.
Caution
Wire Routing
Wire lengths should be minimized (Maximum 1600’ (500 m) shielded,
1000’ (300 m) unshielded).
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.
