Burkert Type 8620 - Manual (Page 73)

mxCONTROL Type 8620
Page 73
13.1.1 Relay as Binary Output (On/Off)
Time t
Controller
Output
100%
(on)
0%
(off)
Time t
Relay Output
(break contact)
Inv = No
Time t
Relay
dropout
Relay
activated
Inv = Yes
Relay
dropout
Relay
activated
Relay Output
(break contact)
The simple On/Off outputs are used to
switch on or off valves, pumps and the
alarm output.
The figure shows the operational mode
of the On/Off outputs.
Figure 20:
Relay as binary output –
Operating mode: Normal or inverted
13.1.2 Relay as PFM Output
Pulse Frequency modulated
(PFM) outputs are used for
controlling the dosing pumps.
The figure shows the
operational mode of the pulse
outputs.
Figure 21:
Relay as PFM output –
Operating mode: Normal or
inverted
If a relay is configured as simple binary output, the output value that is not inverted is always
shown in the display!