Argon wrote:Pfiew, thanks for the answers, but the most of these info sounds like chinese for me.
I thought this would be a simple thing to test with the Raspberry Pi.
I fear that I better begin to learn more basics off electronics.
Mine isn't electronics, it's more choo choo trains. The electricity goes along like Thomas then meets a set of points (C/O relay contact) if the points switch it goes to a new destination.
TRIPLE POLE MOTOR RELAY – DAISY CHAINED with LOCAL SWITCHING CONTROL
2 each FINDER - 18.104.22.168xx.0040 - RELAY, 3PCO, 10A, xxV?C
2 each FINDER - 90.27SMA - SOCKET, DIN/SURFACE, 11 PIN, RELAY
21 Terminals rated for 250 volts 15amps
1 Suitable enclosure, wiring etc.
Step one is to mount the bases and a terminal block, (separate block for relay coils if wanted).
As this is daisy chained the assumption is for raised/retracted to have priority as for an external awning.
The supply connects to terminals 1 for an EARTH, 8 for the incoming NEUTRAL and 9 for the incoming LIVE.
Then terminals 1 – 4 need linking together across the top, as do 5 -8.
A BROWN wire is taken from the terminal strip 9 to terminal 1 on the FIRST relay base (11) then to terminal 6 (21) then to terminal 11 (31) and then back to terminal strip 9 completing a ring.
(I would use 1.0mm2, but then I would also know the motor current ratings etc.)
Next is the Daisy Chaining steps.
RLY 1 terminal 4 (12) to Relay 2 terminal 1 (11) RLY 2 terminal 4 (12) to terminal strip 11
RLY 1 terminal 5 (22) to Relay 2 terminal 6 (21) RLY 2 terminal 5 (22) to terminal strip14
RLY 1 terminal 8 (32) to Relay 2 terminal 11 (31) RLY 2 terminal 8 (32) to terminal strip17
This gives RLY1 priority over RLY2 if both are energised together.
Also either relay (or both relays) get priority over the terminal strip LOCAL control.
So far we have filled the tops of terminal strip no’s 1 – 9, 11, 14 & 17. Next is to fill 10,12,13,15,16 & 18.
RLY1 term 3 (14) to Terminal strip 10 RLY2 term 3 (14) to Terminal strip 12
RLY1 term 7 (24) to Terminal strip 13 RLY2 term 7 (24) to Terminal strip15
RLY1 term 9 (34) to Terminal strip 16 RLY2 term 9 (34) to Terminal strip18
This gives 3 UP/Retract outputs on TS 10, 13 & 16 from RLY 1
This gives 3 DN/Rollout outputs on TS 12, 15 & 18 from RLY 1
Local control can take either or both of these 2 forms, individual motor for maint/repair to group override, with the proviso of priorities already established.
Really tricky step/concept next. Local control of each motor, when priority permits.
Dealing with just Motor 1, which I expect to have 4 wires. A Green/Yellow for earth which connects to the common earthing area, likewise a BLUE wire that connects to the common Neutral area. The remaining 2 wires connect to Terminal strip 10 & 12, they may need to be swapped for direction.
Then a Mains rated rocker or bi-stable switch is added. The centre pole/connection to term 11 and the UP/DN or arrowed contacts to 10 & 12, with the option to be reversed to match relay direction. Ditto for motors 2 & 3.
Depending on the voltage selected, 12vdc is suggested, then interfacing to the PI using a transistor and optocoupler is the next step. Obviously the control using python for opening and closing times etc has yet to be determined.
The electronics come next.... or not as the case may be.