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S7 300 Analog Output card for Servo Valve

Created by: azad_dsc at: 12/21/2011 6:46 AM (4 Replies)

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12/21/2011 6:46 AM	Rate (0)
azad_dsc Posts: 80 Rating: (1)	Hi All, I am on a quest to modify old system with Servo Valve. Do we have a 0-10V analog output with at least 60mA capability? Normally, the output can withstand 500-1000 ohm load which about 10-20mA if i am not mistaken. Thanks Azad
azad_dsc Posts: 80 Rating: (1)
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12/22/2011 11:53 AM	Rate (0)
Helios Posts: 27 Rating: (1)	Hi! I think +-20mA is the max output of a analog card. look at the manual: http://support.automation.siemens.com/WW/view/en/8859629
Helios Posts: 27 Rating: (1)
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12/22/2011 12:04 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	Helios Hi! I think +-20mA is the max output of a analog card. ... Let's say around max. 40mA in case of 6ES7332-7ND02-0AB0... Best regards, Hristo Mihalev

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12/22/2011 12:30 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	Hello, If you need more then 40mA, you can use a [url=http://www.axiomatic.com/connector-amplifier-10v.html] 0-10V Amplifier [/url] Verry usefull if you are working on the limits of the card too. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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12/24/2011 11:52 AM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (152)	You can't drive a servo valve directly from analog output of plc, servo valve needs its custom amplifier, there are many types, look for some of them at bosch,...they come usualy inkit with valve, each valvecan be driven with several custom amplifiers,ask hydraulics dealer which is most suitable.

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