ATEIS ECS - Manual (Page 14)

ECS MANUAL
Version EN.1
14
Note: The maximum cable length depends on the type of cable used and should not exceed 300 m
with standard CAT5.
This restriction is mostly due to supply voltage drops with low wire gauge in longer cable runs
and can be obviated by using external power supplies (Junction Box) or higer diameter cables.
However, we have seen data cable lengths up to 850m working just fine. You will have to put
external power every three remote devices (PPM or URC) or every 300m.
Note: It is recommended to not put more than 8 remote devices (PPM and/or URC) on one ECS. You
can of course use more remote devices (ECS can manage up to 16 PPMs), but this increase the
response time of the devices and you will have to be very carefull in the wiring by adding
external power supply.
4) CONTROL INPUT CONECTORS
Either connects logical input (TTL IN, dry contact) or analogical input (10 k Ohm potentiometer).
Simply connect the switch or relay or potentiometer between the number (1 and 8) and the G
(ground). The number indicates which control logic channel will be used (when you define the action
of the control input).
If you use control Input as analogue input:
You can connect Remote Controllers RAC5 or RAC8. Or a simple variable resistor (10K) to the
analogue control inputs as follows:
You can reduce the step by putting a 100uF capacitor in parallel across the contact.
If you use control Input as Logic input:
The logic In is momentary activate when the contact is closed.
Simple activation of the TTL inputs can be made like this: