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User manual 250/400 OLED
Rev.: SG-20220516
Page 59 of 79
FlexxPump 250 / 400 OLED
User manual
The FP 250/400 OLED in pulse mode only processes the control signals listed in the table up to a
maximum length of 1700 ±25 milliseconds. If a high level (+24 V DC) is present outside the tolerances,
the FP 250/400 OLED returns a message for an impermissible control signal as a response, see
Chap. 8.3. If a high level (+24 V DC) is present at PIN 2 of the electrical interface for longer than 1725
milliseconds, the FP 250/400 OLED also returns a message for an impermissible control signal as a
response, see Chap. 8.3.
The following diagram shows the general characteristics of a control signal that must be generated
by the PLC or external controller and sent to the FP 250/400 OLED controller via PIN 2.
00
2244
UU [[VV]]
tt [[m
mss]]
IIm
mppuullsslläännggee II
PPIIN
N 22
signal length l