1 do’s and don’ts, Do’s and don’ts – High Country Tek emc-3L User Manual
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Basic List of Actions to Create your First Application
The Intella programming environment allows the programmer to be creative in their programming style. Here
are some suggestions as how a program may be structured.
4.1
Do’s and Don’ts
Always Do the Following
• Fully read any supplied information / data sheets BEFORE starting and visit our website at
• Make sure the driver supply voltage is sufficient for the coils on the valve being driven! (24V
supply is OK for both 24V & 12V coils while 12V supply is only good for 12V coils).
o
NOTE: Coil resistance changes with heat, and even modules with ‘Current Feedback’
for auto-corrections, may NOT have sufficient supply voltage to maintain maximum or
correct valve operation.
o
• Check that the power supply voltage is CORRECT, ‘ELECTRICALLY CLEAN’ AND STABLE.
•
Totally ‘Isolate’ the modules from all other equipment and disconnect all power supplies
BEFORE any form or welding or battery charging takes place or damage may occur.
• Unless specified, ensure that each valve coil has ‘dedicated’ wires to the driver connector for
correct operation.
• Use ‘Screened / Shielded’ cable where recommended in the application data sheets.
• Check ALL cables to and from this unit to ensure correct, firm connections with NO loose wires
and NO short or open circuits.
• Ensure that any unused wires / terminals are isolated safely and not shorted together.
• Fit correctly rated ‘In-Line’ fuses on all Power supply lines to protect the system and controller
unit as recommended in the HCT detailed literature.
• Operate the modules WITHIN the specified operating temperature range for best, longest and
most reliable performance.
• Contact HCT for additional information if you are still unsure of connecting and usage of the
driver electronics chosen for your application.
• Keep notes on final parameters, connections and modifications to allow drawings to be updated
and replacement parts to be quickly adjusted / set and installed if ever needed.
Never Do the Following
• Attempt to use a module if you are unsure of I/O connections or expected application operation.
• Attempt to use a module in areas or systems where AC or DC inductors HAVE NOT been fully
suppressed (i.e. relay coils, motor starters etc.)
• Use a controller in areas of ‘Radio Frequency’ (RF) without adequate screening / shielding.
• Attempt to use a power supply that is not rated for the correct required output current and
voltage under full load conditions as damage may occur to the driver card / module.
• Allow wires TO or FROM the controller to be short circuited to each other or shorted to chassis /
cabinet etc
• Disconnect or connect wires to a module unless it is fully isolated from the power supply (i.e.
turned OFF).
• Operate electronics in environments not specified in the modules literature (i.e. high humidity,
Intrinsically safe or hazardous, explosive gasses etc)
• Allow unauthorized or unqualified personnel to connect, set-up, use, modify or repair any driver
or controller.
PN 021-00154-QSG, Rev A.2
Quick Start Guide
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