Constant Resistance Stop Input - Nice mindy A100F Instrucciones Y Advertencias Para El Instalador

2.3.3) Constant resistance STOP input

It enables the connection to the control unit of devices with 8.2KΩ constant resistance (e.g. sensitive edges)
The input measures the value of the resistance and disables the manoeuvre when the resistance is outside the nominal value
The control unit is supplied with 8.2KΩ resistance connected to the input, which simulates the resistance of the devices even if the input is
not used; the resistance must of course be removed when connecting a device with 8.2KΩ output.
Also devices with normally open "NO" or normally closed "NC" contacts, or multiple devices, even of different type, can be connected to the
constant resistance STOP input, provided that appropriate arrangements are made.
For this purpose, refer to the following the table:
NO
In parallel
NO
(note 1)
NC (note 1)
8,2KΩ In parallel
Note 1.
Any number of NO devices can be connected to each other in parallel, with an 8.2KΩ termination resistance
Note 2.
The NO and NC combination can be obtained by placing the two contacts in parallel, and placing in series to the NC contact an 8.2KΩ resi-
stance (therefore, the combination of 3 devices is also possible: NO, NC and 8.2KΩ).
Note 3.
Any number of NC devices can be connected in series to each other and to an 8.2KΩ resistance.
Note 4.
Only one device with 8.2KΩ constant resistance output can be connected; multiple devices must be connected in cascade with a single
8.2KΩ termination resistance (see 11. What to do if...)
NO
NOTE 1
!
if the constant resistance STOP input is used to connect devices with safety functions, only the devices with 8.2KΩ
constant resistance output (the resistance is inside the device) guarantee the fail-safe category 3.
6
Table 1
1st device type:
NC
(note 2)
In series (note 3)
In series
NC
NOTE 2
8,2kΩ
8,2KΩ
In parallel
In series
(note 4)
NO NO
8,2kΩ
NC NC
NOTE 3
8,2kΩ