ABB AC 800M User Manual

Also see for AC 800M: Configuration Library Object Style Guide Installation manual Hardware And Operation Manual

Contents

ABB AC 800M User Manual Manual pdf 99 page image

Section 4 Commissioning of PROFIBUS equipment Installing a Redundancy Link Module RLM 013BDS009029R5001 B 99Installing a Redundancy Link Module RLM 01Use the following procedure to install the RLM 01(for details see related productdocumentation):1. Connect the redundant PROFIBUS lines are connected to ports A and B. PortM is to be used for the not redundant PROFIBUS line to the master or one ofthe slaves. All three PROFIBUS ports, for example A, B and M, have the same9-pin Sub-D connectors (sockets). The pin assignment is in accordance withthe PROFIBUS standard.2. If the A/B ports of an RLM 01 module are located at the start or end of a bussegment, two connector plugs with integrated bus terminating resistors must beprovided. If the M port resides at the start or end of a PROFIBUS, oneconnector plug with integrated bus terminating resistors must be provided. It ispreferable to use PROFIBUS terminals with an integrated resistor combinationthat can be turned on and off. A short-circuit-proof power supply to supply theresistors located in the connector is available on pins 5 (VP+) and 6 (DGND).3. Use only shielded PROFIBUS connectors of suitable design. The connectorsshould preferably have a cable connection that is angled down at 35° and is nowider than 18 mm. The power supply and alarm lines are connected directly tothe terminals labelled 1 to 8.4. Set the transmission rate with the rotary switch on the front panel beforeturning on the power supply. You can select transmission rates of from 9.6kbit/s to 12 Mbit/s. If the transmission rate is changed during ongoingoperation, you should push the reset button once briefly to reset the controllogic and the counters etc. to a defined initial state.5. RLM 01 also tests whether the supply voltage is present at inputs L1+ and L2+.A single power supply with L1+ alone always requires a cable jumper fromL1+ to L2+. This prevents an unwanted error message.