Siemens SED2 Commissioning Manual

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Siemens Building Technologies Commissioning Guide CM1G5192en
HVAC Products 7 Application examples 26.02.2003
Par. no. Value Parameter function Function selection
P0758(1) 0 Scaling of analog input 2: y1 (Default)
P0759(1) 10 Scaling of analog input 2: x2 (Default)
P0760(1) 100 Scaling of analog input 2: y2 (Default)
P2201 80 % Fixed setpoint of digital input 1
P2202 20 % Fixed setpoint of digital input 2
P2253(0) 2224 PID setpoint Fixed
P2306 1
PID acting direction
Indirect
P2200(0) 1
Enable PID controller
PID controller enabled
P2280 10 PID proportional gain
P2285 30
PID integral action time
r2262
Current setpoint
r2272
Actual value
P1120 10 s
Ramp-up time
P1121 30 s Ramp-down time
7.7 Application example 7
Condenser tower shall be controlled with the help of the integrated PID controller including hibernation.
− Switching Hand / Auto via 2 digital inputs
− QAE22A for temperature control
− Error message via relay output 1
− Indication of operation via relay output 2
Hand
Auto
SED2
0
I
P
Fn
P(1)
Hz
L1
L2
L3
PE
L1 L2 L3
20
9
5
4
2
SED2
uvw
M
3
21
22
23
24
25
6
8
Fuses
Building Management System
(BMS)
Inspection switch
Fan
5192A07en
Error
Com
Run
Com
Relay 1
Relay 2
- Auto
- Hand
- Off
Chiller
Immersion temp. sensor QAE22A
DIP switch setting
ON 1 = analog input 1
OFF
❚❚
OFF = DC 0…10 V
1 2 ON = 0…20 mA
2 = analog input 2
OFF = DC 0…10 V
ON = 0…20 mA

Siemens SED2 Specifications

General

Input Voltage	380-480V AC
Current Rating	Depends on model
Control Type	Digital
Communication	PROFIBUS, PROFINET, Ethernet
Communication Interface	RS485
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature, short circuit
Operating Temperature	0 to +45 °C
Storage Temperature	+70 °C