Maybe in combination with a Force off or inhibit action, if you want to condition the activity
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2 more devices online: VMB4AN and VMBKP. I’m waiting for sensors and 4…20 mA transmitter to make any use of VMB4AN. The VMBKP will be used to trigger VMB2BLE-10 (blind controller). Both units updated to the latest firmware (get ready for a coffee when updating VMB4AN).
Configuring VVMBKP turned out to be much easier than what I thought when I was scanning the manual. Looks like there are tons of options that I might never use, but what I wanted worked after a really fast set up 
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What is the thinking here - ULV signals like Velbus (~15V DC) or LV mains wiring for loads (~230V AC) ?
I see that Wago have inline splices (#221-2411) which are rated to 450V/32A ! Crikey.
I was quite surprised to learn that some Wago style quick fit / spring lock connectors are rated up to 40 amps.
There’s a project that we’re starting today that seems like it will mostly be using these types of connectors, purely due to the speed of deployment. But, I suspect there’ll be very few joints.
For me the quick connections for 230 V power only when I have no choice. With my clunky fingers I always have a fight to get all “hair” of a braid into the right location. I’m never 100% sure it’s OK. Ferrule + properly tightened screw or even better the clamping mechanism like it’s on Schneider fuses and I can sleep well. But I understand quick connection are faster, cheaper and safe. In my own house with my own work - installation speed and price are low priorities. I’ve seen smoke coming from electrical devices - an old house Al installation, my old car long time ago or a power drill yesterday - I do not like that smell. Yes, I´m one of those guys:
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I think the rule…
If in doubt… Ferrule
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I got the industrial temp. and ultrasonic distance sensors. I need cables and I’ll be able to test how good is VMB4AN
P.S. The above is a wiki link test 
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One more pump for the pool is on-line now. The new pump will be programmed to dose clarifying agent (run x seconds) in parallel with the main pump to mix the water. Normally it would require 2 time controlled relays and i.e. changing the dose of the clarifying agent would require messing with the relay.
One more pump and 2 more sensors will be online soon. The whole system is based on one VMB4RYLD to control all pumps and a VMB4AN for temperature and level.
For anybody considering “a fancy fully automated pool control system” - there is no need for that. Velbus can do it
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That’s a wonderful example.
I’ll explain that use case in my next run of training.
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4.20mA temperature sensor is online, thanks to this link by @RCZ . The 4…20 mA connection took me by surprise, I was expecting Common and Input1 to be used, but it’s 24V on the + side and Input1 on the minus side.
I didn’t do any accuracy checks as I don’t have a better device yet. The sensor setting and the calibration curve (or a line in my case) is defined in a text file with a very simple format:
[Info]
Name=Temperature
Manufacturer=
Description=
SensorName=Temperature
UnitCharacter=C
Precision=1
SensorType=1
[Data]
4000=0
20000=100
The next on-line will be 4…20mA ultrasonic distance sensor. 
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An outdoor light got a brain transplant and now it’s motion detection and velbus controlled. The lamp was large enough to put VMB1RYS inside.
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A new sensor connected to VMB4AN - this time it’s a 4 wire PT100 for outdoor air temperature measurement. I connected it using a temperature transmitter LKM213. The PT100 is 4-wire type, so while VMB4AN could use it directly as a 2 wire is supported, but it would lose the cable resistance compensation.
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VMB4LEDPWM-20 arriver today and it’s now connected to the system. It controls a white 12V LED 45W strip. Power from a 60W PSU. Dimming is smooth as butter.
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