Bosch Rexroth 4WRPD - Page 19

Safety instructions 19/48
RE 29391-B/05.2021; 4WRPD(H), 4WRPQ(H), 4WRPF(H), 4WRLD, 4WRLF, 4WRLQ, 5WRPF10, 5WRPQ10, Bosch Rexroth AG
Table 7: Typical switch-on and switch-off times
Valve type
Min. switch-on time Typical switch-off time
4WRPFH6 0.2 ms < 40 ms
4WRPFH10 0.2 ms < 50 ms
4WRPDH6 0.2 ms < 40 ms
4WRPDH10 0.2 ms < 50 ms
4WRPF6 0.2 ms < 50 ms
4WRPF10 0.2 ms < 60 ms
4WRPF10EA/EB 0.2 ms < 60 ms
4WRLF16 0.2 ms 125 ms (with command value -100 %),
60 ms (with command value +100 %)
(@ p = 280 bar operating pressure)
4WRLF25/27 0.2 ms 210 ms (with command value -100 %),
140 ms (with command value +100 %)
(@ p = 280 bar operating pressure)
4WRLD16 0.2 ms 125 ms (with command value -100 %),
60 ms (with command value +100 %)
(@ p = 280 bar operating pressure)
4WRLD25/27 0.2 ms 210 ms (with command value -100 %),
140 ms (with command value +100 %)
(@ p = 280 bar operating pressure)
2.7.8 Notice on the operation of enable inputs with a safety PLC
For some safety PLCs the switching outputs are subjected to light and dark tests.
Our dynamic high-response valves respond very quickly to signal changes at the
enable inputs. This may result in unintended valve movements. The test duration
should not exceed times of 100 µs.