Henny Penny 500 Service Manual page 181

Menu Step
<5> Transformer secondary (P6-14)
<6> Amp Sensor auto-detect (P10-6)
<7> unused (P10-5)
<8> Amp sensor #3 (P10-4)
<9> Amp sensor #1 (P10-2)
< A > Amp sensor #2 (P10-3)
< B > 1/2 Scale (2.5v)
< C > Neg Vref (0.0v)
< D > Pos Vref (5.0v)
The displayed value can be toggled between Volts and Bits by pressing
the number 0 button.
If the displayed value has a decimal point and is followed by a "V" it is
voltage (0 to 5 VDC).
If no decimal point is shown, the value is a-to-d bits (0 - 4095).
T-12 View The Each interlock input has an associated indicator digit.
Status Of The If the input signal is currently detected, an identifying letter is displayed.
24v Interlock Cir- If the signal is not detected, an underscore ("_") is displayed.
cuit Digital 4 4 - - H H d d E E l l e e c c :
Inputs: F & M are hard-wired on. P is hard-wired off.
4 4 - - H H e e a a d d E E l l e e c c t t r r i i c c F F r r y y e e r r s s :
DIGITAL INPUTS - AB VHDSFPM
Normal Display: A_ VHDSF_M
4 4 - - H H d d G G a a s s :
F & P are hard-wired on. M is hard-wired off.
4 4 - - H H e e a a d d G G a a s s F F r r y y e e r r s s :
DIGITAL INPUTS - AB VHDSFPM
Normal Display: A_ VHDSFP_
A A = = Power switch "COOK" (ON) position input signal. There are two
"power switch on" input signals, 'A' and 'S'. The 'A' one is not dependent
on the interlock chain, so the controller is always able to read the On/Off
status of the power switch even if the high limit is tripped or the drain is
open.
B B = = Power switch "PUMP" position input signal. Should not have A and B
at the same time*.
Note that this continuity signal can only be read when the pressure out-
put is OFF. The "C" signal disappears whenever the pressure solenoid
output is turned ON.
V V = = VOLTS – 24v detected at start of interlock chain. If "V" is missing, the
24v current limiter (fuse) might be tripped. This "fuse" device (located on
the I/O board) automatically resets as soon as the short condition is
fixed.
Description
The "C" (pressure solenoid) input can only be read
when the pressure output is turned OFF. When the
pressure output is turned ON, the "C" input
normally disappears.
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