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Related Manuals for Siemens SICAM P20
Summary of Contents for Siemens SICAM P20
- Page 1 Preface Content Overview Technical Data SICAM P20 Functions SICAM P21 Operation and Display SICAM P22 Installation and Wiring 3-phase Current Power Communication Meter Maintenance V1.40 Ordering Number Manual E50417-H8940-C558-4...
- Page 2 All other designations in this document can be trademarks Siemens AG reserves the right to revise this document from time to whose use by third parties for their own purposes can infringe the time.
- Page 3 Additional Support Should further information on the System SICAM be desired or should particular problems arise which are not covered sufficiently for the purchaser's purpose, the matter should be referred to the local Siemens represen- tative. Our Customer Support Center provides a 24-hour service.
- Page 4 • The limiting values stated in the document must not be exceeded. This must also be considered during testing and commissioning. ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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Page 5: Table Of Contents
Ordering Number ..............38 SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual... - Page 6 Contents SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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Page 7: Overview
Overview Introduction Features SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 8: Introduction
Overview 1.1 Introduction Introduction SICAM P20, P21 and P22 3-phase electronic current monitoring instruments are designed for measuring 3- phase current of power grid. LCD screen is used. Data acquisition through RS485 is available. RS485 communication supports MODBUS-RTU protocol. This product is extensively applicable to power substation and distribution automation system, industrial control and industrial automation system, energy management system and community power monitoring, etc. -
Page 9: Technical Data
Technical Data Technical Data SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 10: Technical Data
Power consumption: ≤ 1.5 W, 2.5 VA Others Overall dimension (mm): 72×72×85 Dimension Panel cut out size (mm): 67×67 IP53 Weight Approx. 300 g ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 11: Functions
Functions Measurements Limit violation Alarm Display and Buttons Communication Permission and Security Management Digital Input and Output Interface SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 12: Measurements
Use MODBUS RTU protocol to set alarm parameter: set 0110 address to "0F", 0111 to "0000", 0112 to "0258" (multiply "6" by 100 to generate "600" and convert it into "00000258"), 0113 to "00" and 0114 to "01". SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 13: Display And Buttons
(factory default 60 minutes). Error count will be reset after setting once using correct password if such count is less than specific limit. Error count of password and lock time can be set (available in factory state). SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 14: Digital Input And Output Interface
This product is provided with one relay output interfaces for alarm indication or protection control output in many conditions. Electric parameter of internal relay: AC 250 V/DC30 V, 3 A. Figure 3-2 Circuit Diagram of Relay Output Interface ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 15: Operation And Display
Operation and Display Full-screen Display Cyclic Display Key Definition SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 16: Full-Screen Display
"Code list of optional settings in areas A and B". Code list of optional settings in area A: Data item Data type (current value) Transient Maximun Minimum Current Neutral current SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 17: Key Definition
Press "▲" or "▼" again to switch to null line current items. In the figure, L1=0.940 A, L2=1.003 A, L3=1.006 A and null line current=0.079 A. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... - Page 18 C reverse, phase B reverse, and phase A reverse. Other 4 bits are meaningless. For example, "E0000001" means phase C reverse error occurs. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
- Page 19 3P4L 3phase4wire 3P3L_2CT 3phase3wire -2CT Connection 3P3L_3CT 3phase3wire -3CT System AUto Automatic setting 6 bits in total, alter- ing L0-2 password Password Default setting: 000000 SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
- Page 20 All default password is 000000. Note The meter should be reset after altering conversion ratio to ensure reasonable correspondence between communication reading and displayed metering data. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
- Page 21 ". Press " " once again to activate new parameter. Pressing " " at any time during parameter setting will cancel setting or return to previous menu. ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
- Page 22 Operation and Display 4.3 Key Definition SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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Page 23: Installation And Wiring
Installation and Wiring Overall Dimension Precautions of Installation Terminals and Wiring Diagram SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4 Release Date 06.2018... -
Page 24: Overall Dimension
6. Requirement for electric connection: In voltage input circuit and operating power supply circuit, appropriate fuses (such as 0.5 A fuse) should be connected and a CT short-circuit box should be provided to prevent open circuit of CT wiring. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 25: Terminals And Wiring Diagram
For cables to be connected to upper and lower main terminals, cold-pressed UT2.5-3 terminal is recommended before connection. The diagram of connection is below. Figure 5-2 Connection Diagram of Main Terminal SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... - Page 26 Wiring diagram of main terminal is showed below. "V+" and "V-" are power supply terminals. This product sup- ports DC/AC input, with input voltage 40 V to 420 V. Figure 5-3 Wiring Diagram of 3-phase-4-wire (W/O PT) SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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Page 27: Communication
Communication Use of Communication Introduction of MODBUS-RTU Communication Protocol SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 28: Use Of Communication
4. Shield Twisted Pair should be used for RS485 bus cable. For two twisted pairs, different colors are recom- mended, one color for "A" side and another color for "B" side of 485 communication port. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 29: Introduction Of Modbus-Rtu Communication Protocol
CRC will avoid data distortion during responsive transmission of master and slave and improves security and efficiency of system. For formation rule of check code, see Annex 1. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 30: Function Of Application Layer
10 H 00 H 05 H 00 H 02 H 04 H 00 H BCH 61 H Low check High check address - Response frame Device address 10 H 00 H 05 H 00 H 02 H Low check High check SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 31: Crc Method
Repeat step 3 and step 4 until shift rightwards 8 times. Now, all 8-bit data are processed. • Repeat step 2 to step 5 to process next 8-bit data. • The CRC register derived finally is CRC. SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 32: Information Mapping Table
Unit: ms. Value 0 is for BO1 Relay oper- 0 or latched output; value 0107 H unsigned int 2 bytes ation time 100...3000 100~3000 for pulse output SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... - Page 33 2 bytes 0...999 table of area A item of screen A screen of cyclic display item 014F H unsigned int 2 bytes 0...999 of screen A SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
- Page 34 0...65535 Note X-0 means maximum value while X=1 means minimum value. This manual applies to software version for 150113 and later released by the device. ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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Page 35: Maintenance
Maintenance Maintenance SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 36: Maintenance
The meter should be stored in clean location free of hazardous substances or gas which may cause corrosion in air. • In the operating environment of the meter, lightning protection should be provided. ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 37: Ordering Number
Ordering Number Ordering Number SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018... -
Page 38: Ordering Number
SICAM — Function 3I, w/o communication port 3I, 1*RS485 3I, 2BI 1BO, 1*RS485 Model Order No. SICAM P20 7KG7321-0AA00 SICAM P21 7KG7321-0AA01 SICAM P22 7KG7321-0AA21 ■ SICAM P20 P21 P22, 3-phase Current Power Meter, User Manual E50417-H8940-C558-4, Release Date 06.2018...
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