Heras HMD Basic - Operating Devices and Limit Switches

EN – Translation of the original user manual - 2.0 | 2019
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6.4 OPERATING DEVICES AND LIMIT SWITCHES
The inputs for the command devices of the control system are designated “In1” to
“In8” on the top terminal strip and used for the following functions:
Fig.
no.
Terminal
no.
Designati
on
Input function
11.3
3
In8
Hold-to-run OPEN pushbutton (e.g. key switch
on the gate)
11.3
4
In7
Hold-to-run CLOSE pushbutton (e.g. key
switch at the gate)
11.3
5
In6
STOP pushbutton (normally closed contact)
11.3
6
In5
OPEN impulse
11.3
7
In4
PartOPEN impulse (pedestrian passage)
11.3
8
In3
TOGGLE switchover impulse
(OPEN/STOP/CLOSE/STOP)
11.3
9
In2
Limit switch for OPEN position (normally
closed contact)
11.3
10
In1
Limit switch for CLOSED position (normally
closed contact)
For the functions open, close and switchover impulse (toggle), (pushbuttons) with
a normally open contact are connected as command devices. For the functions
OPEN [In5] or partOPEN [In4], it is also possible to have a switch with a static
normally open contact (e.g. timer) to keep the gate open.
Only command devices with a normally closed contact are used for the STOP
function. Several normally closed contacts can be connected in series to form a
stop chain.
The limit switches for the OPEN and CLOSED position of the gate are also normally
closed contacts.
The two input functions with the grey background in the table represent variant 1.
Section 7.3 describes how these two inputs can also be assigned other functions.
In order to meet the specific requirements for hold-to-run operation, inputs “In7”
and “In8” may only be used for pushbuttons for which safe use and a full view of
the gate system are guaranteed during operation.