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Circuit Breaker 3WL Comm 15 module replacement

Created by: TechnoDude at: 4/4/2011 8:17 PM (5 Replies)

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4/4/2011 8:17 PM	Rate (0)
TechnoDude Posts: 47 Rating: (1)	I have to replace one of these units. I see that they come with 126 as the default node number for Profibus DP. I have changed the node number to the required 4 (in accessible-nodes on DP). Is there anything else that needs to be changed, or done, to the replacement unit before putting into service? The attachment is the Step 7 hardware catalog view of how the original unit was configured. If more changes are necessary, can they be done through Step 7? Can you upload from an existing unit? Many thanks!! Attachment snag-01.jpg (883 Downloads)
TechnoDude Posts: 47 Rating: (1)
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4/4/2011 9:13 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 11/7/2024 Posts: 12293 Rating: (2691)	Hello Technodude; changing the Profibus address in the profibus Configurator of HWConfig has no effect on the actual COM 15 on the trip unit.You have to start by changing the Profibus adddtress from the standard 126 to the selected address on the unit itself. Note: you will find all information that follows in this manual: System Manual SENTRON 3WL / 3VL Circuit breakers with communication capability - PROFIBUS in chapter 6.8 Setting and changing the PROFIBUS address of the COM10/COM15/COM20 There are a few ways the manual shows how to change the Profibus address of the trip units, the easiest being: 1) Changing the address of the COM15 (SENTRON WL) with the help of the ETU76B (directly on the trip unit display) Thanks to its structured menu, the ETU76B also offers the option of changing the PROFIBUS DP address. To do so, proceed as follows: 1. Press "ESC" twice to exit the "screen saver" with the display of the current values.Pressing "ESC" (or any of the three buttons) once switches the backlighting on, and by pressing it a second time the main menu is displayed. 2. Use the "Up"/"Down" keys to select "Change Parameter" in the main menu and confirm with "ENTER". 3. Select "PROFIBUS" in the "Communication" submenu. 2) Setting the PROFIBUS address via STEP7 (Set_Slave_Address) Both PROFIBUS DP modules (COM 10 and COM 15) support the PROFIBUS DP function Set_Slave_Add. With the help of this class 2 master function, the address of a slave can be changed on PROFIBUS DP.The address can be changed either in the SIMATIC Manager or in HW Config in the STEP7 software package. The procedure is as follows: From the "Target System" menu in one of the two programs, select "Assign PROFIBUS Address". In the window that then opens showing the connected nodes, change the address of the DP slave. Note: The address can only be changed in Wait_Prm status, that is, the slave must not have a cyclic connection with a class 1 master. The address change will then be carried out immediately. The figure below shows how the PROFIBUS address can be changed via STEP7. This requires the PC with STEP7 to be connected with the slave via a PROFIBUS interface. (Open the manual for the image) But in all cases it is important to remember that: Assigning an address (COM15)The COM15 of the SENTRON WL assumes the new address, but operation with the changed address only becomes effective later when the 24 V DC power supply of the CubicleBUS has been interrupted for a short time. The new address only becomes active when power has been restored. So remember to shut down the unit and start it up again after assigning a new adress on the unit, so the "new" address can be used by the trip unit for Profibus-DP communications. Hope this helps, Daniel Chartier

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4/4/2011 10:05 PM	Rate (0)
TechnoDude Posts: 47 Rating: (1)	Thanks dchartier for the info. I actually did change the address on the COM 15 itself by going online with it through accessible nodes and changing the address, which was successful. What I was wondering is if the com module itself holds any other settings that may need changing.
TechnoDude Posts: 47 Rating: (1)
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4/4/2011 11:01 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 11/7/2024 Posts: 12293 Rating: (2691)	Hello Technodude; Not that I remember, as with most Profibus slaves it will adapt to the parameters of the bus set by the master, if it has no onboard limitations (for example, some slaves cannot use the 12 MB seting, so the master must adjust). Once the unit has been rebooted and has accepted its new address, you should be able to set the exchanges qith the master. Please check the manual for any information to the contrary. Hope this helps, Daniel chartier

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4/4/2011 11:12 PM	Rate (0)
TechnoDude Posts: 47 Rating: (1)	dchartier...thanks again!!
TechnoDude Posts: 47 Rating: (1)
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4/5/2011 8:37 PM	Rate (0)
TechnoDude Posts: 47 Rating: (1)	It's all good! The node change is all that was required! Thanks again!!
TechnoDude Posts: 47 Rating: (1)
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