Sensor Output Voltage Range - Combine Requirements; Volt Adapter (Md #B6421) - New Holland Combines Only - MacDon FlexDraper FD1 Series Operator's Manual

3.8.2 Sensor Output Voltage Range – Combine Requirements
The auto header height control (AHHC) sensor output must be within a specific voltage range for each combine, or
the AHHC feature will not work properly.
Table 3.20 Combine Voltage Limits
Combine
Challenger, Gleaner A,
Massey Ferguson
Case IH 5088/6088/7088,
5130/6130/7130, 7010/8010,
7120/8120/9120, 7230/8230/9230, and
7240/8240/9240
Case IH 2588/2577
Gleaner R and S Series
John Deere 60, 70, S, and T Series
CLAAS 500/600/700 Series
New Holland CR/CX - 5 V system
New Holland CR/CX - 10 V system
NOTE:
Some combine models do not support checking sensor output voltage from the cab (early Case 23/2588 series,
CLAAS 500/600/700 Series). For these models, check output voltage manually. Refer to
Voltage Range: One-Sensor System, page 127
129.
10 Volt Adapter (MD #B6421) – New Holland Combines Only
New Holland combines with a 10 V system require the 10 V
adapter (A) (MD #B6421) for proper calibration of the auto
header height control (AHHC) feature.
If a 10 V New Holland combine does not have the adapter
installed, the AHHC output will always read 0 V, regardless
of sensor position.
214683
OPERATION
Low Voltage Limit
0.5 V
0.5 V
2.8 V
0.5 V
0.5 V
0.5 V
0.7 V
2.8 V
or Manually Checking Voltage Range: Two-Sensor System, page
A
Figure 3.154: 10 V Adapter (MD #B6421)
126
Range (Difference
High Voltage Limit
4.5 V
4.5 V
7.2 V
4.5 V
4.5 V
4.5 V
4.3 V
7.2 V
Manually Checking
between High and
Low Limits)
2.5 V
2.5 V
4.0 V
2.5 V
2.5 V
2.5 V
2.5 V
4.1–4.4 V
Revision A