Operating Instructions

Application examples
CO2 sensor, 2 PID setpoints
7
90 | 118
Siemens A5E36496664A_f
Smart Infrastructure 2021-10-11
7.9 CO2 sensor, 2 PID setpoints
● Macro 112 "CO2 sensor, 2 PID setpoints"
● ON/OFF and PID setpoint selection via DI0 or DI2
● Set the fixed setpoint (50 % corresponding to the
CO2 equivalent 1000 ppm)
● External alarm at DI1. The fan is stopped.
● Error message: Digital output 0
● Status display: Digital output 2
● If DI0 and DI2 are active simultaneously, the
setpoints are added. The drive starts when one of
the inputs is in ON position.
Parameter Value Description
p756[0] 0 Unipolar voltage input (0...10 V)
p840[0] r2225.0 ON / OFF (OFF1)
p1113[0] 0 Setpoint inversion
p2103[0] 0 BI: 1. Acknowledge faults
p2106[0] r722.1 External fault
p2200[0] 1 Technology controller enable
p2201[0] 50 Technology controller fixed value 1
p2203[0] 10 Technology controller fixed value 3
p2220[0] r722.0 BI: Technology controller fixed value selection bit 0
p2222[0] r722.2 BI: Technology controller fixed value selection bit 2
p2253[0] r2224 Technology controller setpoint 1
p2264[0] r755[0] Technology controller actual value
p2267 120% Technology controller upper limit actual value
p2268 -10% Technology controller lower limit actual value
p2306 1 Technology controller fault-signal inversion
9
5
6
7
14
15
AI0+
AI0-
PTC A
PTC B
DI0
DI1
DI2
3
4
0 - 10 V
P24V
25
24
23
22
21
20
19
18
AO0+
AO0-
AO1+
AO1-
Optional
DO0
DO1
DO2
Air quality
sensor 0-10V,
e.g. QPM2100
28
69
GND
DI COM
2
GND
External fault
ON / OFF Setpoint 2
12
13
26
27
ON / OFF Setpoint 1
Fault
Alarm
Operation
Speed
(0..20mA)
Output current
(0..20mA)