EcoStruxure Panel Server - Configuring Water Pulse Counters to Digital Inputs

[BrettWabbis]

Hi there community,

Setting up two water flow meters (1L per pulse) into the two digital inputs atop a PAS600L (Fw Vers 002.003.000, Hw Vers 002.000.000).

Attached are screenshots for the DI's configuration, sampling settings, and monitoring data (inc advanced).

water is not turned on to site yet, however I believe I should simply be able to bridge the DI input terminals to simulate a pulse, however for the life of me I cannot see any data coming back in conducting this test.

Is there some setting I'm missing or am I testing inefficiently?

Any help appreciated.

[CamboHeath · Accepted solution]

Hi there,

By bridging the input directly you are acting as a dry contact. The PAS600L requires external excitation for this in the form of a 24V DC power supply. See page 10/20 of the install manual attached.

 

[BrettWabbis]

Thankyou!

[BrettWabbis]

Please see link to water meters installed onsite. 
I note they are rated 6v switching . Possibly a stupid question, does that mean we cannot send 24v to the pulse meter or am I misunderstanding the 6v rating?  

[BrettWabbis]

Link: 

https://www.hrproducts.com.au/wp-content/uploads/2022/01/WATER-METERS_MT-EX_V1.11.20.pdf

[Romain_Polette]

Hello @BrettWabbis , 

It seems your reed switch is not compatible with 24 VDC (6 VDC). So you cannot connect your pulse meter directly on the PAS600L power supply.

Check if :

• you can find some 24 DC reed switch relay that is compatible with your water meter.
• install an intermediate relay

Many other water meters are using a 24 AC/DC compatible reed switch.

Regards,