Degassing And Drainage - Bosch rexroth CytroBox Operating Instructions Manual

38/128 Product information
Activation/deactivation
of the function
Degassing
Drainage
Bosch Rexroth AG, CytroBox, RE 51057-B/11.19

5.3.6 Degassing and drainage

The degassing and drainage function is deactivated on delivery. Due to complex
interactions with the complete hydraulic system, these functions can only be
activated and parameterized in cooperation with Bosch Rexroth.
Degassing and drainage of oil is provided. For this purpose, the air and water
concentration in the oil is evaluated and, if threshold values are exceeded,
a degassing valve and a drain valve are controlled. The functions can be activated as
follows:
Table 31: Activation/deactivation of the function
Parameter/Bit State
FALSE
P-0-1380 Bit 0
TRUE
FALSE
P-0-1380 Bit 1
TRUE
If the measured value of the air concentration (P-0-1270) is above the threshold
value (P-0-1389[2]) for a debouncing time (P-0-1389[9]), the degassing valve
(P-0-1418 bit 0) is controlled until the degassing time (P-0-1389[11]) has expired.
After successful degassing, a restart lockout occurs for a pause time (P-0-1389 [10]).
"
Table 32: Overview of Degassing
Parameter Description
P-0-1270 Actual value
P-0-1389[9] Debouncing time
P-0-1389[2] Threshold value
P-0-1389[11] Degassing time
P-0-1389[10] Pause time
Drainage is only active when degassing is not requested.
If the measured value of the relative oil humidity (P-0-1272) is above the threshold
value (P-0-1389[12]) for a debouncing time (P-0-1389[15]), the degassing
valve (P-0-1418 bit 0) and the drain valve (P-0-1418 bit 1) are controlled until the
drain time (P-0-1389[17]) has expired.
After drainage, degassing is automatically carried out. The degassing valve
(P-0-1418 bit 0) is still controlled until the "degassing time after drainage"
(P-0-1389[22]) has expired.
After successful degassing, a restart lockout occurs for a pause time (P-0-1389 [16]).
Description
Degassing deactivated
Degassing activated
Drainage deactivated
Drainage activated
"
parameters
Unit
mbar
ms
mbar
sec
sec
Default
-
0
160
30
300