Communication Connections
NOTE:
1.
Only Tx & Rx (no RTS/CTS) may be used for COM1 RS232 when COM3 RS-232 is also used.
Con.B
Con.A
COM1
/
COM3 [RS232], 9 Pin, Male, D-sub COM2
/
COM3 [RS485], 9 Pin, Female, D-sub
Touchscreen Calibration & Restore Factory Default
Restore Factory Default:
Follow Step 5 to open the Setting dialog box. After login, press the button of
“Reset HMI to default”.
Another way to restore factory default is entering
“default111111” when logging in. An Attention window
shows, enter
“yes’.
Please note that the projects and data stored in the unit are all cleared after restoring factory default.
Another way to enter touch screen calibration mode: Press and hold anywhere on the screen until HMI
starts.
Battery Replacement
Battery Specification: UL Certification Battery, Type CR2032, Rated 3V, Max. Abnormal Charging
Current 10mA, Working Temperature: max. 80°C
Battery replacement shall be performed by qualified personnel (engineer) only and care must be taken
when handling lithium batteries. For more information on battery replacement and disposal
considerations, please refer to the following link
:
http://www.weintek.com/download/MT8000/eng/FAQ/FAQ_103_Replace_Battery_en.pdf
NOTE:
Make sure that all local and national electrical standards are met when
installing the unit. Contact your local authorities to determine which codes apply.
Power
Use power output that meets SELV (Safety Extra-Low Voltage) requirements. The unit can be
powered by DC power only, voltage range: 24
±
20%, compatible 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 2A.
Fusing Require-
ments
If the display does not come on within 5 seconds of power up, remove power. A resettable fuse
will protect against overcurrent faults in DC circuit and the resetting will take place after a period
of time. Check wiring for proper connections and try to power up again.
High Voltage
A resettable fuse will prevent damage for overcurrent
condition however it isn’t guaranteed.
DC voltage sources should provide proper isolation from main AC power and similar hazards.
Emergency Stop
A Hard-wired EMERGENCY STOP should be fitted in any system using an HMI to comply with
ICS Safety Recommendations.
Supply Voltage
Condition
Do not power the unit 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 unit.
Wire Routing
a. Power wire length should be minimized (Max: 500m shielded, 300m unshielded).
b. Please use twisted pair cables for power wire and signal wire and conform to the
impedance matching.
c. If wiring is to be exposed to lightning or surges, use appropriate surge suppression
devices.
d. Keep AC, high energy, and rapidly switching DC power wiring separated from signal wires.
e. Add a resistor and capacitor in the parallel connection between the ungrounded DC power
supply and the frame ground. This provides a path for static and high frequency
dissipation. Typical values to use are 1M Ohm and 4700pF.
Hardware
Considerations
The system designer should be aware that devices in Controller systems could fail and
thereby create an unsafe condition. Furthermore, electrical interference in an operator
interface can lead to equipment start-up, which could result in property damage and/or
physical injury to the operator.
If you use any programmable control systems that require an operator, 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, and conform to the guidelines for
installation of Controllers recommended in NEMA ICS 3-304 Control Standards.
Programming
Considerations
To conform to 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.
GMEC278XU_cMT2078X_UL_Installation_210809
CAUTION
DANGER
PIN#
COM1
[RS232]
COM3
[RS232]
1
2
RxD
3
TxD
4
5
GND
6
7
RTS
TxD
8
CTS
RxD
9
GND
PIN#
COM2
[RS485]2W
COM2
[RS485]4W
COM3
[RS485]2W
1
Data-
Rx-
2
Data+
Rx+
3
Tx-
4
Tx+
5
GND
6
Data-
7
8
9
Data+
CAUTION
NOTE:
Make sure that all local and national electrical standards are met when installing
the unit. Contact your local authorities to determine which codes apply.
CAUTION
NOTE:
Make sure that all local and national electrical standards are met when installing
the unit. Contact your local authorities to determine which codes apply.
SW1
SW2
SW3
SW4
Mode
ON
OFF
OFF
OFF
Touch Screen Calibration Mode
& Reset HMI to Default
OFF
ON
OFF
OFF
Hide Start Button
OFF
OFF
ON
OFF
Update OS
OFF
OFF
OFF
ON
Reserved
OFF
OFF
OFF
OFF
Normal
Limited Warranty
This product is limited warranted against defects in design and manufacture.
The proven defective product will either be repaired or replaced, at Weintek’s discretion.
This warranty shall not cover any product which is
(a) Out of warranty period which is 12 months from the manufacturing month of the HMI products.
(b) Damage caused by Force Majeure, accident, negligence, improper installation or misuse.
(c) Product has been repaired or taken apart by unauthorized technicians.
(d) Products whose identification markings have been removed or damaged.
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8
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