IMP Pumps NMTC module - Manual (Page 3)

3
Contents
1 Symbols and conventions used in this
document ........................................................4
1.1 Abbreviations and conventions .........4
2 Introduction.............................................5
2.1 System diagram ................................5
2.2 Specifications ...................................5
3 Module layout .........................................7
3.1 Connection considerations ...............8
3.2 Connecting the module wiring ..........9
3.3 Connection examples ..................... 11
4 Control modes and priorities ................. 12
4.1 Priority of settings .......................... 12
4.2 Control variables............................. 13
4.3 Module mode selection .................. 13
4.4 Mode 1 ........................................... 14
4.4.1 Digital (switch) control ............ 15
4.4.2 Analog control ........................ 17
4.5 Mode 2 ........................................... 18
5 Relay output .......................................... 20
6 Ethernet................................................. 21
6.1 Bus topology ...................................21
6.2 Connecting to pump ad-hoc with a
cross over cable .........................................22
6.3
Connecting to pump via router .......26
6.4 Pump configuration over Ethernet ..27
7 Modbus .................................................31
7.1 Modbus related interface ...............31
7.2 Bus topology ...................................31
7.3 Connection to Modbus ...................32
7.4 Speed, parity and address ...............32
7.5 Termination ....................................32
7.6 Register block overview ..................33
7.7 NMTC Configuration register block .33
7.8 NMTC Status register block .............34
7.9 Pump control register block ............34
7.10 Pump status register block ..............36
7.11 Pump data register block ................38
7.12 Modbus telegrams and function
codes 39
8 Fault finding ...........................................39
8.1 Error codes .....................................39
8.2 Communication faults .....................41
WARNING!
Prior to installation and commissioning, read these instructions first. Installation and operation must
comply with local regulations.
WARNING!
Installation and use of this product requires experience and knowledge of this or similar products.
Persons with reduced physical, mental or sensory capabilities must not use this product, unless
properly instructed and supervised. Children must not be allowed to play with this product.