Outputs - Burkert 1094 Standard Instructions De Service

3.4 Outputs

Output for the proportional valve
Output transistor
Load current
Output voltage
Clock frequency
Number of outputs
To regulate the Type 2832 proportional vlave, the controller outputs a current-regu-
lated PWM signal via a transistor.
Output for the control of the vaccum pump motor
Output transistor
Load current
Output voltage
Special freatures
Number of outputs
The „open-collector" output shown in Figure 4 is used for the control of a relay/con-
tactor for switching the vacuum pump motor.
The „open-collector" output is switched active by the controller as long as the propor-
tional valve is open.
from CPU
(Port Bx)
Figure 4: "Open-Collector" transistor output to the pump controller
8 - 1094
Positiv-switching transistor
0 to 250 mA
24 V DC
270 Hz
One valve output each for + and -
„Open-Collector" transistor output
100 mA
24 V DC
Freewheeling diode, after-run time adjustable (in con-
nection with the manual control unit Type MKNE-1094)
One pump output each for + (24 V) and – (GND)
Ω
2.2 k
BC 337 or similar
Ω
10 k
+ 24 V
Output