Table of Contents
Advertisement
All signals in this section are open collector types. This means that they are made by transistors
with the collector as signal wire and the emitter as ground wire. The ground wire is therefore
always required for the signal wires.
Ratings
The ratings for the (open) collector outputs are as follows:
U
(open collector) = 15 V.
max
I
(on state) = 20 mA.
max
U
(closed) = 0,8 V (I
max
I
(open collector) = 50 microA (V
max
Note: Only DC is allowed on the (open) collector outputs.
It is not possible to switch AC or negative voltages on the outputs. The outputs are protected
against negative voltages.
6.6.4.
Buzzer Contact
On the auxiliary interface is an external buzzer contact. This contact can be used to control an
external buzzer (or bell). If the contact is closed, the buzzer is on. The contact is insulated from
the supervisor system, which allows AC signals to be used. Note that the insulation does not
agree to safety requirements and therefore it cannot be used as safety barrier.
The pin layout is depicted in
6-8 "Auxiliary Interface Connector
The ratings of the contact are as follows:
U
(open) ..... = 24 V.
max
I
(closed) .... = 100 mA.
max
U
(closed) .... = 0,8 V (I
max
I
(open) ..... = 50 A (V
max
U
Insulation .. = 50 V.
max
56
<I
).
c
max
<V
o
Figure 6-7 "Layout of Splitted V.24 / Auxiliary Cable."
9p.".
<I
).
c
max
<V
)
o
max
(Max. Insulation voltage between contact and "ground".)
)
max
and
Figure
- Quick Links:
- General
Hide quick links:
Advertisement
Table of Contents
