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© Danfoss | August 2018
AQ00000211 |
37
ENGINEERING TOMORROW
Figure 14
Recommendation
• Danfoss recommends using closed loop control mode, i.e.
P3073: Cut-off valve control mode
is set to 255
(Closed loop
control)
.
• Danfoss recommends to use default values for
P3074: Cut-off valve CL pull current
and
P3076: Cut-off valve CL hold
current
. Contact your local technical support at Danfoss Power Solutions if there is a need to change these parameters.
• Danfoss recommends setting
P3097: Cut-off valve PWM pre-load value
to 100
(100%)
, assuming solenoid has the
same voltage rating as the battery voltage. If the solenoid does not have the same voltage rating as the battery voltage,
the supply voltage to the solenoid controlled by
P3097: Cut-off PWM pre-load value
, which can be calculated as
follows:
𝑃𝑃
3097 =
𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆𝑆
𝑣𝑣𝑣𝑣𝑆𝑆𝑣𝑣𝑆𝑆
𝑟𝑟𝑣𝑣𝑟𝑟𝑆𝑆𝑆𝑆𝑟𝑟
Battery
voltage
Example
Let battery voltage be 24 V and the solenoid voltage rating be 12 V, then
P3097: Cut-off valve PWM pre-load value
is
found to be:
𝑃𝑃
3097 =
12
𝑉𝑉
24V
= 0,5
For this example,
P3097: Cut-off valve PWM pre-load value
must be set to 50 (50%), to avoid the PVED-CLS from
triggering safe state due to overcurrent in the solenoid.
Содержание PVED-CLS
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