User Guide v 2.3 — September 2015 Heating the Mold
Heater Circuit Test 95
Chapter 9 Heating the Mold
This chapter describes how to start the Altanium system and check for any errors, and alarm
conditions if they occur.
With all Altanium-to-mold connections made and mold cooling switched on, touch the Start
button to start the system.
9.1 Heater Circuit Test
9.1.1 Startup
On startup, H cards perform a heater circuit test on all zones before full power is applied, to
minimize risk of damage to the controller or hot runner system. The duration of this test is 15
seconds and is carried out before the soft start routine is activated.
This test is critical for detecting the following heater circuit faults:
IMPORTANT!
Personnel must read, understand and follow all safety precautions.
Faults Description
Open Circuit Occurs when a conductor is broken or comes loose and no current flows
through the circuit it is associated with.
Short Circuit Occurs when current travels along an unintended path as the result of a
wiring error across the heater outputs, a pair of frayed conductors or a
pinched wire.
Leakage A low current short to ground that typically occurs when moisture is
absorbed by a heater’s insulation material.
Wrong Heater This is a case when the heater exceeds the capacity of the zone it is
connected to in the controller.
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