Deif PPM 300 - Transistor Output Wiring; Digital Inputs Wiring

Terminal Symbol Name Type
24 Bi-directional input
Digital input (OFF: 0 to 2 V DC, ON: 8 to 36 V DC, Impedance: 4.7 kΩ)
25 Bi-directional input
26 Bi-directional input
27 Bi-directional input
28 Bi-directional input
29 Bi-directional input
30 Bi-directional input
31 Bi-directional input
32 COM Common Common for digital input terminals 24 to 31
6.5.2 Transistor output wiring
Each transistor has a normally open terminal ( ). The transistor group has a positive supply terminal (
+
), and a common
(
-
). The following diagram shows the connection of the transistor output to an external contactor.
12/24 V DC
0 V DC
Contactor
A1
A2
-
+
INFO
You can install a diode ( ) to reduce electromagnetic interference.
6.5.3 Digital inputs wiring
The digital inputs are bi-directional inputs. This means that wiring to the input and common terminals may be swapped around
without affecting their operation.
However, all the digital inputs in a group share a common terminal. The digital input common for a module may be either low
(connected to 0 V), or high (connected to 12 or 24 V). If the common is low, all the digital input signals connected to the group must
be high (connected to 12 or 24 V). Similarly, if the common is high, all the digital input signals connected to the group must be low
(connected to 0 V).
The digital input common does not act as the common for any of the other terminals on the same hardware module. The digital input
common is also not affected by the digital input commons on other hardware modules.
INSTALLATION INSTRUCTIONS 4189340909I UK Page 71 of 144