Load control
3.1.1 Installing the sensors
There are two types of sensors that can be used and configured in the Power Management system:
- 01457: 7 .5 mm Toroidal Sensor
- 01458: 19 mm Toroidal Sensor
3.1.1.1 Physical installation of the sensors
IMPORTANT: 01457 and 01458 type sensors must be installed by facing the side on which the distinctive label is glued towards the fiscal meter or the meter associated with generation.
45A
CTR
Y OF MFG
PA3832NL
DATE CODE
3.1.1.2 Setting the sensors on devices art. 01455 and 01450
IMPORTANT: When you install a sensor in art. 01455 and 01450 (new installation or replacement of an existing one), you must associate the device that is to use this sensor with the characteristic parameter shown on the label; the procedure is as follows.
• Physically connect the sensor to the input S1, S2 or S3 of the device (art . 01455 or 01450)
• Setup Configuration Groups Power management Load control* or Measurement control** Select the desired metering functional unit Device parameters Sensor setting
- select the type of sensor (01457, 01458) Set
- enter the “calibration” value (in the example shown in the figure, this value is 123) specified on the sensor label Set
Lastly select Save and the control panel will return to the menu Device parameters
* If the functional unit belongs to a Load Control group
** If the functional unit belongs to a Measurement Control group
3.1.2 Setting the trigger thresholds
After configuring the load control module 01455 and, where applicable, the power meter 01450, you need to set the system's trigger thresholds and response times .
In the case of systems with an electronic meter with a domestic contract, set the parameters (referring to the values stated in the contract) as shown in the following example .
184
Load control
Assuming you have a supply with the following characteristics:
• single-phase system
• nominal contract power: 3 kW; a level of power 10% higher than the nominal contract power can be consumed for an unlimited period (3 .3 kW in this case);
• maximum power usable for a limited period: 4 .2 kW;
• maximum period for which maximum power can be used: 3 hours .
You can set the values in the By-me control panel:
• first threshold: 3 .2 kW;
• second threshold at the maximum power value: 4 .1 kW;
• validity period for the second threshold: 90 minutes .
IMPORTANT: If the meter is electronic, the contract thresholds must always be checked with the electricity supplier.
CAUTION: If in doubt, check the values by contacting the customer assistance service of your electricity provider.
To compensate for any potential measurement errors and synchronization between the load control logic and the fiscal meter, the value of each of the two thresholds must be less than the threshold required by the fiscal meter n Single-phase system
To set the thresholds for controlling the power consumed and the threshold time, follow the procedure below:
Power management Load control Setup Setting thresholds
Select the threshold ( Threshold 1 [kW], Threshold 2 [kW] ) that you want to set and enter the desired value; confirm with Set and at the end of the operation touch Save .
The control panel confirms the operation has been completed .
In a similar manner the Threshold time is set too; enter the desired value and confirm with Set Save
Note : After the Set step, entering the desired value can condition also the other power setup fields, automatically setting the minimum value .
If you want to zero out the operation time, set Threshold 1 = Threshold 2 .
n Three-phase system
To set the thresholds for controlling the power consumed and the threshold time for the entire system, follow the procedure below:
Power management Load control Setup Setting thresholds Global threshold
Select the threshold ( Threshold 1 [kW], Threshold 2 [kW] ) that you want to set and enter the desired value; confirm with Set and at the end of the operation touch Save .
The control panel confirms the operation has been completed .
185
Load control
In a similar manner the Threshold time is set too; enter the desired value and confirm with Set Save
Note : After the Set step, entering the desired value can condition also the other power setup fields, automatically setting the minimum value .
To set thresholds for the single lines of the three-phase system, first select the desired line:
Power management Load control Setup Setting thresholds Threshold line 1 or
Power management Load control Setup Setting thresholds Threshold line 2 or
Power management Load control Setup Setting thresholds Threshold line 3
Lastly set the desired threshold values and confirm with Set Save
Important: If the values of “Threshold 1”, “Threshold 2 and “Threshold Time” have been set, as soon as the consumed power exceeds “Threshold 1” (P > Threshold 1) the sensor is able to ensure absorption up to a value of “Threshold 2” for a time equal to the “Threshold Time” and disconnecting any loads (according to the set priorities) to bring the consumed power back to a lower value than “Threshold 2” (P < Threshold 2).
After the “Threshold Time” the maximum power that can be drawn is limited to the value of “Threshold 1” for the set time (P < Threshold 1) disconnecting any loads (according to the priorities); at the end of the "Threshold
Time" the cycle starts again.
If you want to zero out the operation time, set Threshold 1 = Threshold 2 .
The diagram below illustrates an example of how the loads get disconnected according to the set thresholds and threshold times .
KW
THRESHOLD 2
P1: WASHING MACHINE
(1500 W)
P2: OVEN
(1000 W)
THRESHOLD 1
LOAD CONTROL
TRIGGERS -P2: OVEN
(- 1000 W)
LOAD CONTROL TRIGGERS
+ P1: WASHING MACHINE
(+ 1500 W)
+ P2: OVEN (+ 1000 W)
LOAD CONTROL TRIGGERS + P1: WASHING MACHINE (+ 1500 W)
LOAD CONTROL TRIGGERS - P1: WASHING MACHINE (- 1500 W)
Tint<2
Ts 2 Ts 2 Ts 2 Ts 2
ABSORPTION
DECREASES (1700 W
BELOW THRESHOLD 1)
Ts 2 min
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