Settings on HDX EFIS to monitor Output Activity of Monkworkz Generator

Bardample

I love flying!
Joined
Aug 18, 2013
Messages
42
Can someone advise me how to set the following screen on my HDX.
I have a Monkworkz generator wired in parallel to my main Buss( as per one recommended set up per install manual
I usually have this switched on at start up , as, well as the main B and C 40 Amp Alternator switch on. After following advice to reduce the B and C alt output to 14.2 Volts , I have noticed from time to time after start up, that the B and C alt will output 14 V and say 10- 20 Amps ( I have an Earthx 680 battery) and the Monkworkz gen will output 3-5 Amps( as measured from pin 5 on the output picolock). This will drop to zero if the on off switch for the Mkwz is cycled off then on. The zero current output of zero is the default when the Mkz is on standby mode . I understand that there is no harm if the B and C alt and the Monkworkz generator both produce output, but the Monkworkz is supposed to be in the standby mode and produce output when the main alternator output drops down to battery level.

I recently wired pin 2 of the output pico lock on the Mkz to my Skyview EFIS as well, to monitor the Mkz. I wish the green light on the screen widget to only show green when the Mkz is actively producing Voltage to my buss.My setup below must be incorrect as the green light on my Skyview screen seems tobe on even when the Mkz amps output ( via the out pin 5 pico lock ) says zero.

I would appreciate what settings on the below screen are need. Thanks for any advice. Bardample
IMG_5352.jpeg
 

F18Sailor

New Member
Joined
Mar 20, 2025
Messages
11
Bardample,

I've been through this myself. First, you need to have the custom sensor definitions in your "-SENSOR_CONFIG.sfg" files:

sensor={
id=MONKWORKZ CURRENT
function=AMPS
pins=C37_P8 C37_P22 C37_P23 C37_P31
name=MZ30_A
min_val=0
max_val=30
resolution=1
round=.1
is_piecewise=0
low_coeff={
c_x4=0
c_x3=0
c_x2=0
c_x1=11.111
c_x0=0
}
low_resistance=NONE
low2high_cross=0
high_coeff={
c_x4=0
c_x3=0
c_x2=0
c_x1=0
c_x0=0
}
high_resistance=NONE
high2low_cross=0
shift=5
}
sensor={
id=MONKWORKZ STATUS
function=CONTACT
pins=C37_P4 C37_P6 C37_P7 C37_P8 C37_P9 C37_P10 C37_P11 C37_P12 C37_P20 C37_P21 C37_P22 C37_P23 C37_P31
name=MZ30_S
min_val=0
max_val=5
resolution=1
round=.1
is_piecewise=0
low_coeff={
c_x4=0
c_x3=0
c_x2=0
c_x1=1
c_x0=0
}
low_resistance=PULL_UP_10K
low2high_cross=0
high_coeff={
c_x4=0
c_x3=0
c_x2=0
c_x1=0
c_x0=0
}
high_resistance=NONE
high2low_cross=0
}

Second, I set my Monkworkz contact to "red" to warn me if it is engaged. For me, that is an "emergency" mode, i.e the primary alternator has gone down and we're now on the secondary, or for some reason the bus current has spiked and the voltaage is sagging to the point the Monkworkz is online. Red is danger in most situations..

Regardless, like you, I set the range from 0.1 to 5v. The key is to enable the "self-clear", so if it does trigger, (like it can immediately after startup, when the Monkworkz comes online to above 1200 rpm to "aide" the B&C in re-charging the battery), then dis-engage, the color should change again. I will confirm this when I'm at the plane tomorrow and snap a photo of my settings.
 

F18Sailor

New Member
Joined
Mar 20, 2025
Messages
11
This is how mine is set.

I notice to clear the contact I have to cycle the MZ-30, which is in-line with their notes.
 

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Bardample

I love flying!
Joined
Aug 18, 2013
Messages
42
Thankyou for your help F18Sailor.
I think we maybe on slightly different tacks.

My pin 2 on Mkz reg is connected to Skyview HDX as a monitor to see if the Mkz is outputting voltage.
My pin 5 on Mkz reg is connected to show Amps out to buss.

The Mkz current manual says pin 5 Mkz shows 0 volts if not outputting, and 5 volts if actively putting ( or trying to) 14v output.

I have my Mkz 'on' switch turned on all the time ( manual says this is ok) as I have configured the Mkz to output 14 v if the main B and C alternator fails. Often when I start the engine , I find the B and C and the Mkz show amperage readings , and as said by Mkz and others, switching the MkZ gen off and on resets the Mkz to standby.( and 0 amps output).

I connected pin 2 Mkz to HDX as another monitor on the HDX to keep a check on the Mkz function.

I think I have worked out that if Mkz is 0 volts , I shall have the widget indicate black( ie Mkz not outputting volts) , and if the HDX shows 5 volts ( as referred to above), I shall make the widget indicate green.

I shall see if this works for me.
 
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