Does NBES0307 smoke sensor is enabled for NBRK0750 ?

[SESA380953]

Two questions

1. Does NBES0307 smoke sensor is enabled for NBRK0750 ?

2. How many NBES0307 sensors will be able to handle the new NBRK0750 ?

Thank you in advance.

[Cory_McDonald · Accepted solution]

Hello Victor,

1. Does NBES0307 smoke sensor is enabled for NBRK0750?

• Yes, this is outlined in the NetBotz compatibility matrix found on the NetBotz 750 APC product page: https://www.apc.com/shop/us/en/products/NetBotz-Rack-Monitor-750/P-NBRK0750

2. How many NBES0307 sensors will be able to handle the new NBRK0750?

• There is no defined limits other than the overall limits of the appliance.

Kind Regards,

Cory

[APC_Steve · Accepted solution]

Hi SESA380953,

If you're unsure what sensors are supported by a specific unit, I suggest you keep the NetBotz compatibility chart link handy:

https://download.schneider-electric.com/files?p_enDocType=Specification+guide&p_File_Name=JHIN-7PTK7...

This document lists the different NetBotz appliances as well as all the supported sensors for each in a handy little chart.

Please note that there are no stated limits to the number of smoke sensors that you can connect to the NetBotz 750 but if you are connecting them to external sensor pod 150s, be sure to follow any recommendations on powering them. I believe the suggestion is one AP9505I power supply for every 4th pod.

Thanks,

Steve

[APC_Steve · Accepted solution]

P.S.

Cory pointed out to me that unlike previous NetBotz hardware, the 750 is supposed to be able to handle the full complement of 150 pods without an external power supply. This is true however I feel more comfortable with a few extra power supplies if they were all using the smoke sensors.

Steve

[Andy · Accepted solution]

Hi Steve, just a tip, as I measured some time ago the smoke sensor 0307 consumes something less 10mA @24v. But the line between the pods may drop voltage so you are 100% right about redundant power supplies,

[APC_Steve · Accepted solution]

Thanks @Andy! I don't have enough to test a full config. Also, did you check them with any of the devices in an alarm state? I believe they draw more which is why I considered that aspect in the 1st place.

😉

Thanks again, Steve

[Andy · Accepted solution]

I will test it some day later (office limitations). We have a request to integrate 3rd party sensors and it's more complicated than I expected 🙂 Anyway all what the sensor do is pulling signal (0) to +5 and I don't remember any significant changes in power consumption. 

[Andy · Accepted solution]

Hi @APC_Steve 

NBES0307

(In my case with NBWL0455) consumes 0.1ma @23v line (powered, no smoke)

and 17.3ma @23v (smoke detected) + 0.4ma @5v sensor line.

(probably no extra power needed typically but for fully loaded installations and long cables every extra 0.4 Watt in case of smoke detection may play a role. My another consideration is the power supplies those may lose their parameters with time. NetBotz equipment often work for years in hot conditions - capacitors in power supplies may give up quicker. So extra power won't be excessive and your recommendation in general is correct.)