KAESER SIGMA CONTROL 2 Service Manual

Precondition Access level 2 is activated.
The operating mode is displayed.
The electrical connection via -X16: 5 (+) and -X16: 6 (−) has been made (external analog signal).
1. Open the 5.5.1 <Configuration – External DI / AII signal – Current signal AII1.02> menu.
2. Use «Up» or «Down» to select the 4mA line.
4 0 0 m b a r 0 8 : 1 5 A M 8 0 ° C
Header
5.5.1 Current signal AII1.02
Menu
AII1.02 ☑
Value type Speed
Decimal places 0
Unit 1/min
4mA 1500/min
Active line
20mA 2000/min
3. Press «Enter».
The setting mode is active.
4. Use «Up» or «Down» to set the speed.
5. Press the «Enter» key.
The setting is applied.
6. Adjust the switching differential for the 20mA parameter in the same manner.
Result The External speed control mode is set.
Pressure peaks caused by an excessively fast run-up of the speed
➤ Set the change speed for the speed (see chapter 8.6.7).
8.6.6 Control with external variable
You can use up to two controllers in External values control operating mode. This variable is dis‐
played as a percentage with adjustable number of decimal places (e.g., the measured value for
oxygen content). The two-point controller always acts on load control.
The two-point controller is activated in the 5.4.3.1 Controller settings menu with checkbox Load
control ). The two Load on and Load off parameters affect only the two-point control.
In frequency-controlled machines, you automatically activate the PI controller when you preselect
the External values control operating mode. It controls the actual value which is captured with the
AII 1.02 current signal. Speed is the setting variable in this case. You can specify the target value
in the 5.4.3.1 Controller settings menu or via bus after you have set the activation bit XBS49=1 (see
process map): 7_7601_BLOW_PA). You configure only the PI controller in the 5.4.3.1 Controller
settings menu.
Using a two-point controller, you can influence the load command of the blower depending on the
external value. Target value pairs xA and xB are available for this purpose.
Each target value pair includes a switching-on threshold Load on and a switching-off threshold
Load off . Both target value pairs are used depending on the set operating mode.
In addition to off , the following operating modes are available:
■ xA (permanently)
■ xB (permanently)
8 Initial Start-up
8.6 Operating modes in frequency-controlled machines
No.: 901700 10 E
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 2.5.3
99

KAESER SIGMA CONTROL 2 Specifications

General

Controller Type	Microprocessor-based
Model	SIGMA CONTROL 2
Manufacturer	KAESER
Input Voltage	24 V DC
Protection Class	IP54
Communication Protocols	Modbus, Profibus
Data Logging	Comprehensive data logging
Remote Monitoring	Yes
Communication Interface	Ethernet