Siemens CU240B-2 List Manual

2 Parameters
2.2 List of parameters
SINAMICS G120 Control Units CU240B-2/CU240E-2
338 List Manual (LH11), 01/2016, A5E33839529
Description: Sets the start value for the output of the technology controller.
If the drive is switched on and the technology controller is already enabled (see p2200, r0056.3), then its output
signal r2294 first goes to the start value p2302, before the controller starts to operate.
Dependency: The starting value is only effective in the mode "technology controller as main speed setpoint" (p2251 = 0).
If the technology controller is first enabled when the drive is switched on, a start speed remains ineffective, and the
controller output starts with the actual setpoint speed of the ramp-function generator.
Note: If the technology controller operates on the speed/setpoint channel (p2251 = 0), then the starting value is interpreted
as the starting speed and when operation is enabled, is connected to the output of the technology controller (r2294).
If fault F07426 "technology controller actual value limited" occurs while ramping up to the starting value and if the
associated reaction has been set to "NONE" (see p2100, p2101), the starting value is kept as the speed setpoint
instead of a switch to closed-loop control operation.
Description: Setting to invert the system deviation of the technology controller.
The setting depends on the type of control loop.
Value: 0: No inversion
1: Inversion
Caution: If the actual value inversion is incorrectly selected, then the closed-loop control with the technology controller can
become unstable and can oscillate!
Note: The correct setting can be determined as follows:
- inhibit the technology controller (p2200 = 0).
- increase the motor speed and in so doing, measure the actual value signal (of the technology controller).
- if the actual value increases with increasing motor speed, then the inversion should be switched out.
- if the actual value decreases with increasing motor speed, then the inversion should be set.
If value = 0:
The drive reduces the output speed when the actual value rises (e.g. for heating fans, intake pump, compressor).
If value = 1:
The drive increases the output speed when the actual value increases (e.g. for cooling fans, discharge pumps).
Description: Sets the threshold value for the system deviation of the technology controller, which controls holding the controller
integral component in the range of the skip speeds of the ramp-function generator.
Recommendation: To avoid speed setpoint steps in the range of the skip speeds, we recommend setting p2252 bit 4 = 1 (ramp-function
generator bypass de-activated).
Dependency: The parameter has no effect for p2252 bit 5 = 1 (integrator hold de-activated).
Refer to: r2273
p2302 Technology controller output signal starting value / Tec_ctr start val
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: -
Unit group: - Unit selection: - Func. diagram: 7958
Min Max Factory setting
0.00 [%] 200.00 [%] 0.00 [%]
p2306 Technology controller system deviation inversion / Tec_ctr SysDev inv
Access level: 3 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Dyn. index: -
Unit group: - Unit selection: - Func. diagram: 7958
Min Max Factory setting
0 1 0
p2339 Techn. controller threshold value f. I comp. hold for skip speed / Tec_ctrl thr_skip
Access level: 3 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: PERCENT Dyn. index: -
Unit group: 9_1 Unit selection: p0595 Func. diagram: -
Min Max Factory setting
0.00 [%] 200.00 [%] 2.00 [%]

Siemens CU240B-2 Specifications

General

Brand	Siemens
Model	CU240B-2
Category	Inverter
Language	English