Electronics LP-24 - Manual (Page 3)

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Diagnostic LED’s
VALVE ON – When this LED is on or blinking, the electromagnet is receiving power. When the LED
is off, the permanent magnets will hold or block the shot flow. When the LED is on, but not blinking,
the valve flow rate is at full capacity. When the LED is blinking, the electromagnet is regulating the
shot flow.
Vin > 0.25 Vdc- This LED indicates that the valve is receiving an analog signal input greater than
0.25 Vdc. When this LED is off there is no media flow allowed. The input signal range is 0-10 Vdc. At
10 Vdc the valve will “open” to full capacity, which is usually 10% to 50% higher than the calibrated
range. The relationship between the 0-10 Vdc input signal and actual flow rate is nonlinear. The out-
put signal 0-10 Vdc signal is linear and this makes accurate regulation by the AC-24 control possi-
ble.
24Vdc ENABLE – This LED indicates that the valve is receiving a 24 Vdc Enable signal. When this
LED is off, the valve is inhibited, and no shot will flow. This feature is an on-off action so there is no
need to disable or remove the 0-10 Vdc input signal.
24 Vdc Power – This LED indicates that 24 Vdc is available to operate the electromagnets for me-
dia flow. It should always be available and able to supply 2 Amps. If the LED is blinking, the supply
is above the recommended operating range +/- 2VDC (22-26VDC). If the LED is OFF, then the sup-
ply is below the recommended range. If that condition occurs, please call for technical support.
All of the LED’s must be on in order to have media flow.