Danfoss H1B 060 User Manual

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 setting + 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 (%)
Pressure Compensator OverRide (PCOR) with Brake Pressure Defeat (BPD) configuration
A brake pressure defeat (BPD) shuttle valve ahead of the pressure compensator prevents operation in the
deceleration direction (when motor is running in pump mode). This is designed to prevent rapid or
uncontrolled deceleration while the vehicle/machine is slowing down.
Pressure compensator override with brake pressure defeat is mainly used in systems with pumps having
electric or hydraulic proportional controls or automotive controls.
The brake pressure defeat must be controlled by a 2-line external signal based on direction of motor
rotation, see the following table:
Pressure Compensator OverRide (PCOR) operation
Motor rotation High pressure port Control pressure on port
1)
PCOR function
CW A XA no
CW A XB yes
CCW B XA yes
CCW B XB no
1)
Differential control pressure between ports XA and XB: p
min
= 2.5 bar [36 psi] and p
max
= 50 bar [725 psi]
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 | 79

Danfoss H1B 060 Specifications

General

Brand	Danfoss
Model	H1B 060
Category	Engine
Language	English