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Temperature Relays and MINIKA®
Operating Manual STWA4MH
- Electronic current transducer for AC currents with modbus RTU
STWA4MH
12800-0702-00
Mains Monitoring
Digital Panelmeters MINIPAN®
Switching Relays and Controls
Page 1 / 8
ZIEHL industrie – elektronik GmbH + Co KG
Daimlerstr.13, 74523 Schwäbisch Hall, Germany
+ 49 791 504-0,
info@ziehl.de,
Measuring Transducers
Grid- and Plant Protection
updated: 2020-06-08 / sm
from Firmware: 0-00
www.ziehl.de
www.ziehl.de
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Related Manuals for ZIEHL STWA4MH
Summary of Contents for ZIEHL STWA4MH
- Page 1 ZIEHL industrie – elektronik GmbH + Co KG Daimlerstr.13, 74523 Schwäbisch Hall, Germany + 49 791 504-0, info@ziehl.de, www.ziehl.de Temperature Relays and MINIKA® Mains Monitoring Digital Panelmeters MINIPAN® Switching Relays and Controls Measuring Transducers Grid- and Plant Protection updated: 2020-06-08 / sm...
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Page 2: Table Of Contents
Display elements The STWA4MH has a status LED. The operating states are indicated by an LED: LED Flashes 0,5s For 60s after connecting Us (additional Modbus address 247 is active) -
Page 3: Application And Short Description
Application and short description The STWA4MH enables the space-saving a cost-effective measurement of the actual RMS value of an alternating current. Compared to transducers with analog output, the bus technology significantly reduces the effort for the hardware (one RS485 input for up to 246 devices) and the wiring. Applications are e.g. the recording of the current consumption of electrical motors in processing machines. -
Page 4: Installation
Commissioning / Detailed Description The STWA4MH is a measurement transducer. It measures AC up to 60A and has an RS485 interface (Modbus RTU). The measured analog current value is made available as a digital signal and can be read by a PLC, an IPC, or a master computer. -
Page 5: Modbus Rtu (Rs485)
Modbus RTU (RS485) The STWA4MH has a Modbus RTU interface. The STWA4MH acts as a slave in the bus system. The bus line is connected to the STWA4MH (D0 – D1) via a plug-in spring-type terminal. The spring-type terminal is designed with two connections per pole, so that the bus line can be passed on comfortably and terminating resistor can be mounted at last device in bus. -
Page 6: Error Search
Test conditions EN 61010-1 Rated impulse voltage 4000 V Overvoltage category Pollution degree Rated insulation voltage Ui 300 V On-period 100 % Insulation test voltage 3 kV, U , 50 Hz, 1 min. STWA4MH 12800-0702-00 Page 6 / 8 www.ziehl.de... - Page 7 9 mm Protection class housing / terminals IP54 / IP20 Snap mounting on 35 mm standard rail EN60715 or Mounting M4 screws Mounting position various Weight app. 90 g Subject to technical changes STWA4MH 12800-0702-00 Page 7 / 8 www.ziehl.de...
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Page 8: Housing Type H
1 – Base 2 – Clip for DIN-rail 3 – Terminal 4 – Surface-mount (M4) Disposal Disposal should be carried out properly and in an environmentally friendly manner in accordance with legal provisions. STWA4MH 12800-0702-00 Page 8 / 8 www.ziehl.de...