Posts: 14
Threads: 0
Joined: Sep 2022
Reputation:
0
Greetings
I have a 1st generation KC868-H32 that I use to control my motor blinds. I have self reset push buttons in each blind.
I know I have to use node red for the integration in HA, but how can I see the state os the blinds (open or closed) in HA?
Also, this module doesn't have the physical interlock function. Is there a way that I can configure node red to send two messages to two different relays upon pressing of a switch?
Something like:
msg.payload= "RELAY-SET-255,2,0"
followed by
msg.payload= "RELAY-SET-255,1,1"
return msg;
the objective is to ensure that relay 2 is not active before activating relay 1, to ensure the motor is not given two commends to close and open at the same time, which would burn the motor. (each motor uses two relays, one for up, another for down)
Posts: 6,495
Threads: 841
Joined: Oct 2020
Reputation:
160
11-14-2022, 10:13 AM
(This post was last modified: 11-14-2022, 10:14 AM by admin.)
if you are using KC868-H32B, the newest firmware will have "interlock" function for control motor. if you are using H32L or H32LW with "switch terminal board", any button have pressed, will feedback a tcp message (which key is pressed and the newest relay state) back to Node-Red.
Posts: 6,495
Threads: 841
Joined: Oct 2020
Reputation:
160
Do not display independent buttons on home assistant, so that user can't turn on relay1 and turn on relay2. only create "scene" automation in home assistant.
Posts: 6,495
Threads: 841
Joined: Oct 2020
Reputation:
160
the best way is :
1. replace H32 with H32B new version PCB.
2. now many motor have protect circuit, even if motor two wire both have power (relay1 and relay2 all are ON) will no problem. you just chose buy this motor will be ok.
Posts: 6,495
Threads: 841
Joined: Oct 2020
Reputation:
160
interlock by software is not a good way, by hardware is most safety.
Posts: 14
Threads: 0
Joined: Sep 2022
Reputation:
0
Thank you for your reply.
Can I get a discount on a new KC868-H32B, since my current relay board is now useless?