Siemens SINAMICS V20 Inverter Manuale utente

___________________

SINAMICS

SINAMICS V20 multi-pump control

Operating Manual

05/2018

A5E43416874

-002

Overview

Pump switch-in/switch-out

Stop mode

Pump switchover

Service mode

Faults and alarms

Siemens AG

Division Digital Factory

Postfach 48 48

90026 NÜRNBERG

GERMANY

A5E43416874-002

Ⓟ

05/2018 Subject to change

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will

be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to

property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by

personnel qualified

for the specific

task in accordance with the relevant documentation, in particular its warning notices and safety instructions.

Qualified personnel are those who, based on their training and experience, are capable of identifying risks and

avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication

may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the

information in this publication is reviewed regularly and any necessary corrections are included in subsequent

editions.

SINAMICS V20 multi-pump control

Operating Manual, 05/2018, A5E43416874-002 3

Table of contents

1 Overview................................................................................................................................................. 5

2 Pump switch-in/switch-out....................................................................................................................... 9

3 Stop mode ............................................................................................................................................ 19

4 Pump switchover................................................................................................................................... 21

5 Service mode........................................................................................................................................ 25

6 Faults and alarms ................................................................................................................................. 27

Table of contents

SINAMICS V20 multi-pump control

4Operating Manual, 05/2018, A5E43416874-002

SINAMICS V20 multi-pump control

Operating Manual, 05/2018, A5E43416874-002 5

Overview

Multi-pump control is suitable for applications that require simultaneous operation of up to

four pumps, for example, equalizing significantly fluctuating water pressures or flow rates.

After the multi-pump control is enabled, you can configure the following four sub-functions

based on your particular requirements: switching-in/out, stop mode, pump switchover, and

service mode.

Note

To control more than two pumps simultaneously, you must connect an optional I/O Extension

Module to expand the number of V20

I/O terminals. For more information about this option

module, see Section "I/O Extension Module" in "SINAMICS V20 Inverter Operating

Instructions".

Enabling the function

To enable this function, you must first make sure that the firmware version of the V20

inverter is 3.94 or later. Then, use the optional Parameter Loader and an SD card to

download the multi-pump control script files into the inverter. For more information about the

Parameter Loader and the SD card, see Section "Parameter Loader" in "SINAMICS V20

Inverter Operating Instructions".

Proceed through the following steps to download the script files into the inverter:

1. Download the script files "autorun.lua", "utils.lua", and "SSTAGE.bin" via the Internet

address (https://support.industry.siemens.com/cs/us/en/ps/13208).

2. Place "SSTAGE.bin" in the root directory of the SD card.

3. Create a folder named "romfs" under the root directory of the SD card and place

"autorun.lua" and "utils.lua" in the folder.

4. Fit the Parameter Loader to the inverter, and then insert the SD card into the Parameter

Loader.

5. Power on the inverter, and data transfer starts automatically. The inverter displays

"Updating" during the transfer.

6. After a successful transfer, the inverter displays "Update complete". If any fault or alarm

occurs during the transfer, see Section "Faults and alarms (Page 27)" or Section "Faults

and alarms" in "SINAMICS V20 Inverter Operating Instructions" for possible reasons and

remedies.

7. Remove the Parameter Loader and re-power on the inverter. Then the multi-pump control

function is automatically enabled.

Overview

SINAMICS V20 multi-pump control

6Operating Manual, 05/2018, A5E43416874-002

Note

•

Make sure that the function-specific script files you use is downloaded from the previous

Internet address. Otherwise, alarm A650 may appear reminding you that this script is not

an officially released script. Also, you can download the "SINAMICS V20 Inverter

Operating Instructions" from the link.

•

You can obtain the "SSTAGE.bin" file from the corresponding firmware updating package.

Make sure that the version of the firmware updating package to be downloaded and the

version of your V20 firmware are the same.

•

After you successfully download the script files into the inverter, all parameters used for

this function are automatically set to their default settings. Note that the default settings of

parameters P0731, P0732, P0733, P0734, P0840, P0845, P1200, and P2200, which are

different from their factory defaults, are changed to adapt to the function. To make sure

that the multi-pump control function runs properly, do not manually set the values of

P0840 and P0845 after the function is enabled.

•

Multi-pump control uses PID controller-specific parameters. For more information about

how to configure those parameters, see Section "Setting the PID controller" in

"SINAMICS V20 Inverter Operating Instructions".

•

If you use the motor staging function on the inverter, this function is automatically

disabled after the multi-pump control function is enabled.

Setting parameters

Parameter

Function

Setting

P4002 Control of script interpreter This parameter controls the execution of the script.

0: Stop script

1: Start script

Range: 0 to 1 (default setting: 1)

r4003 Status of script interpreter Displays the status of the script interpreter.

0: Interpreter ready

1: Script loading

2: Script loading failed

3: Script executing

4: Script execution error

5: Script execution complete

Range: 0 to 5 (default setting: 0)

P4004 Script start control Controls when the script is executed.

0: The script will be executed only when the value of P4002 is changed from 0

to 1.

1: The script will be executed automatically after power-on if P4002 = 1.

Range: 0 to 1 (default setting: 1)

P4030 Multi-pump control script

parameter default

Controls the reset operation of the script parameters. The value change to this

parameter takes effect after the next time the script is started.

0: Set values of all script parameters to default settings after the script is started.

1: Do not reset.

Range: 0 to 1 (default setting: 1)

Overview

SINAMICS V20 multi-pump control

Operating Manual, 05/2018, A5E43416874-002 7

Note

You can only use digital input 1 as the ON/OFF control source, related to r

4000.0.

Note

To enable the multi

-pump control function automatically after each inverter power-on, make

sure that you do not change the default setting of P4002 and P4004, that is, "1".

Overview

SINAMICS V20 multi-pump control

8Operating Manual, 05/2018, A5E43416874-002

SINAMICS V20 multi-pump control

Operating Manual, 05/2018, A5E43416874-002 9

Pump switch-in/switch-out

The inverter uses four relays (KP1 to KP4), which are connected to digital outputs DO1 to

DO4, to switch pumps in and out according to the PID error (r2273). In addition, two groups

of contactors, KDs and KMs, are used to switch the pumps between inverter operation and

line system operation. Soft pump switching can be realized as all motors start/stop with ramp

speeds, so as to minimize the shock to the pipes.

Main circuit

Note

The maximum voltage on DO1 is ± 35

V DC. The maximum load current on DO1 is 100 mA.

Pump switch-in/switch-out

SINAMICS V20 multi-pump control

10 Operating Manual, 05/2018, A5E43416874-002

External control circuit

Pump switch-in

If the pump controlled by the inverter runs at the maximum speed (P1082) and the PID error

is higher than the switch-in threshold (P2373) and lower than the delay override threshold

(P2376) for a specified time (P2374), the inverter first switches the pump from inverter

operation to line system operation, and then switches on an idle pump which is softly started

with a ramp-up speed and runs in inverter operation.

Note

If the PID error rises above the switch

-in delay override threshold (P2376), the inverter skips

the switch

-in delay (P2374) and performs the switch-in operation immediately.

Parameter P4012 is used to control the selection mode of the next pump that is softly started

by the inverter. Bits 01 to 04 of r4000 control the pump which is selected to run depending

on P4012.

●P4012 = 0: Selecting the next pump according to the fixed sequence. The inverter

switches in the pump by following the sequence M1, M2, M3, to M4.

●P4012 = 1: Selecting the next pump according to the operating hours. The inverter

switches in the pump with the least absolute operating hours (r4026 to r4029).

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