Elster EK220, Инструкция по эксплуатации и информация по установке

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Volume Conversion Device EK220
© Elster GmbH 5
4.4.3 Devices with RS485 interface, without modem (also FE260 without modem).......................... 86
4.4.4 EK220 connected to RS485-Bus (real RS485)................................ ................................ ........ 86
4.5 Applications for Interface 2 as RS232................................ ................................ ............... 87
4.5.1 Modem with control signals................................ ................................ ................................ ..... 87
4.5.2 Modem without control signals................................ ................................ ................................ 87
4.5.3 Interface isolator MTL5051 ................................ ................................ ................................ ..... 88
4.5.4 Other devices with RS232 interface (no modem) ................................ ................................ .... 89
4.5.5 Sending short messages by SMS. ................................ ................................ .......................... 89
4.5.6 Standard output data records for process data ("three-minute values") ................................ ... 89
4.6 Interface protocols................................ ................................ ................................ ............ 90
4.6.1 Modbus ................................ ................................ ................................ ................................ .. 90
4.6.2 Idom protocol................................ ................................ ................................ .......................... 90
5 Installation and maintenance ................................ ................................ ................................ .. 91
5.1 Installation procedure ................................ ................................ ................................ ....... 91
5.2 Cable connection and earthing ................................ ................................ ......................... 92
5.3 Checking the pressure sensor ................................ ................................ .......................... 92
5.4 Terminal layout................................ ................................ ................................ ................. 93
5.5 Connection of a low-frequency pulse generator (reed contacts) ................................ ....... 94
5.6 Connection of the serial interface RS485................................ ................................ .......... 95
5.6.1 FE260 Function Expansion (with or without modem)................................ ............................... 95
5.6.2 FE230 Function Expansion................................ ................................ ................................ ..... 96
5.6.3 Other devices with RS485 interface (no modem) ................................ ................................ .... 96
5.6.4 EK220 connected to RS485-Bus (real RS485)................................ ................................ ........ 97
5.7 Connection of the serial interface RS232................................ ................................ .......... 98
5.7.1 Modem with control signals................................ ................................ ................................ ..... 98
5.7.2 Industrial modem EM260 or Modem without control signals................................ .................... 98
5.7.3 Interface isolator MTL5051 ................................ ................................ ................................ ..... 99
5.7.4 Other devices with RS232 interface, EK220 battery powered................................ ................ 100
5.7.5 Other devices with RS232 interface, EK220 with external power supply................................ 100
5.8 Seals ................................ ................................ ................................ .............................. 101
5.8.1 Seal layout of basic device ................................ ................................ ................................ ... 102
5.8.2 Seal layout of temperature sensor ................................ ................................ ........................ 104
5.8.3 Sealing layout of pressure sensor -Type CT30................................ ................................ ...... 105
5.8.4 Sealing layout of pressure sensor type 17002................................ ................................ ....... 106
5.9 Battery replacement ................................ ................................ ................................ ....... 107
A Approvals ................................ ................................ ................................ ............................. 109
A-1 EC Declaration of Conformance ................................ ................................ ..................... 109
A-2 Approval for Ex Zone................................ ................................ ................................ ...... 110
B Technical data ................................ ................................ ................................ ...................... 115
B-1 General data (mechanical) ................................ ................................ ............................. 115
B-2 Batteries................................ ................................ ................................ ......................... 115
B-3 External power supply ................................ ................................ ................................ .... 116
B-4 Pulse and status inputs ................................ ................................ ................................ .. 116
B-5 Signal and pulse outputs ................................ ................................ ................................ 117
B-6 Optical serial interface ................................ ................................ ................................ .... 117
B-7 Electrical serial interface (internal)................................ ................................ .................. 117
B-8 Pressure sensor ................................ ................................ ................................ ............. 118
B-8.1 Type CT30................................ ................................ ................................ ............................... 118
B-8.2 Type 17002................................ ................................ ................................ .............................. 118
B-8.3 Installation information ................................ ................................ ................................ ............. 118
B-9 Temperature sensor ................................ ................................ ................................ ....... 119
B-10 Measurement uncertainty ................................ ................................ ............................... 119
C Index................................ ................................ ................................ ................................ ..... 120