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Circuit Breaker Rating for S7-300 IO Module
Created by: boycemento at: 6/13/2011 4:49 AM (2 Replies)
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| 6/13/2011 4:49 AM | |
Joined: 4/22/2010 Last visit: 5/19/2023 Posts: 82 Rating:
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Hi Experts, Based on the attachment, were going to put a miniature circuit breaker (MCB) between the SITOP Power supply and IO modules (DI,DO,AI and AO). Is it safe or enough to use a 2 Amperes miniature circuit breaker per module to protect the control voltage supply (SITOP Power Supply) from total failure in case of an external short circuit? I believe that these IO modules have different current rating.Does it has any relation on the MCB to be installed? Or do we need to use a MCB with higher ampere rating? Here are the order numbers of the IO modules installed: 1. 32DI (6ES7321-1BL00-0AA0) Properties of SM 321; DI 32 x DC 24 V: ● 32 inputs, isolated in groups of 16 ● Rated input voltage 24 VDC ● Suitable for switches and 2-/3-/4-wire proximity switches (BEROs) 2. 32DO (6ES7322-1BL00-0AA0) Properties of SM 322; DO 32 x DC 24 V/0.5 A: ● 32 outputs, electrically isolated in groups of 8 ● Output current 0.5 A ● Rated load voltage 24 VDC ● Suitable for solenoid valves, DC contactors and signal lamps 3. 8AI (6ES7331-7KF02-0AB0) Properties ● 8 inputs in 4 channel groups ● Programmable measurement type at each channel group – Voltage – Current – Resistance – Temperature ● Programmable resolution at each channel group (9/12/14 bits + sign) ● Any measuring range selection per channel group ● Programmable diagnostics and diagnostic interrupt ● Programmable limit value monitoring for 2 channels ● Programmable hardware interrupt when limit is exceeded ● Electrically isolated to CPU and load voltage (not for 2-wire transducers) 4. 8AO (6ES7332-5HF00-0AB0) Properties ● 8 outputs in one group ● The output can be selected by individual channel – Voltage output – Current output ● Resolution 12 bits ● Programmable diagnostics and diagnostic interrupt ● Programmable diagnostic interrupt ● Electrically isolated from the backplane bus interface and load voltage ● Supports parameter reassignment in RUN Hope you can help me with this... Thanks and best regards, lordgalen Splitted from Effects of Short Circuit to S7 300 modules and its power supply. AttachmentMCB PER MODULE DESIGN.pdf (56 Downloads) |
Last edited by: O_Moderator at: 6/14/2011 10:07 AMnew subject after splitting Last edited by: lordgalen at: 6/13/2011 5:10 AMLast edited by: lordgalen at: 6/13/2011 5:09 AM |
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| 6/14/2011 10:09 AM | |
Joined: 4/24/2009 Last visit: 9/16/2023 Posts: 2683 Rating:
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Thread closed, because question is already published in the following thread Best regards O_Moderator |
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