Control start setting range (pressure above case pressure)
p
start
(possible settings per MMC.- adjustable)
2 to 30 bar [29 to 435 psi]
P
max allowable
Control start s 50 bar [725 psi]
Control ramp
From 100% to 20% displacement
14 bar [203 psi]
From 100% to 0% displacement
17.5 bar [254 psi]
Formulas to calculate start and end input command
Control type
Input command (bar)
% displacement
All sizes (bar)
DH
Start input command
from 100%
p
start
± 0.5
from y% max.
(1 - V
gy
/V
gmax
) x 17.5 + p
start
± 0.5
End input command
at 0 %
p
start
+ 17.5 ± 2.5
at x % min.
(1 - V
gx
/V
gmax
) x 17.5 + p
start
± 2.5
Where:
V
gmax
Maximum, theoretic possible motor displacement per revision (cm
3
/rev)
V
gx
Minimum displacement setting of desired unit (cm
3
/rev)
V
gy
Maximum displacement setting of desired unit (cm
3
/rev)
x
Minimum displacement (%)
y
Maximum displacement (%)
W
Warning
Zero degree capability results in a high risk of overspeed and drops in efficiency if the motor operates
between 0–20% displacement.
Technical Information
H1 Bent Axis Variable Displacement Motors, Size 060/080/110/160/210/250
Controls – nomenclature, description
©
Danfoss | December 2016
11037153 | BC00000043en-US1103 | 73
