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ExMax-...-Y
Special options
Electrical connection
All actuators are equipped with a universal supply unit working at a voltage range from
24...240 V AC/DC. The supply unit is self adjusting to the connected voltage !
The safety operation of the spring return function works if the supply voltage is cut.
For electrical connection inside hazardous areas an Ex-e terminal box, certificated in acc.
Modulating / 3-pos. – with / without spring return
24...240 V AC/ DC
−
+
~
~
PE
a
b
1
2
3
4
5
Selection of running time for spring return:
Spring return in ~ 10 s = Standard wiring
Spring return in ~ 3 s = Additional wiring on terminal 5
Function and enforcement control of switch a and b in modulating mode:
▪ a closed – Forced-ON (OFF) in acc. to left/ right mounting of actuator
▪ b closed – Forced-OFF (ON) in acc. to left/ right mounting of actuator
Modulating – with / without spring return (no feedback)
24...240 V AC/ DC
−
+
~
~
PE
1
2
3
4
5
Selection of running time for spring return:
Spring return in ~ 10 s = Standard wiring
Spring return in ~ 3 s = Additional wiring on terminal 5
Installation
Ex area –
zone 1, 2, 21, 22
ExBox
Schischek GmbH Germany, Muehlsteig 45, Gewerbegebiet Sued 5, 90579 Langenzenn, Tel. +49 9101 9081-0, Fax +49 9101 9081-77, E-Mail info-de@schischek.com
ExMax-...-YF
... -CTS
... -VAS
Self adjustment:
To adjust the signal input / output to the angle of
rotation of the damper / valve the button (T) must
be pushed for a minimum of 3 sec.
Y
Y
U
U
mA
V DC
V DC/mA
mA
V DC
1
2
3
4
5
6
Reverse function:
Bridge 3 –4 reverses the
input and output signals
Self adjustment:
To adjust the signal input / output to the angle of
rotation of the damper/ valve the button (T) must
be pushed for a minimum of 3 sec.
Y
Y
mA
V DC
V DC/mA
1
2
3
4
5
6
Reverse function:
Bridge 3 – 4 reverses
the input signals
Safe area
Y:
0...10 V / 4...20 mA
U:
0...10 V / 4...20 mA
Supply *
24...240 V AC/DC ± 10 %
* electrical wiring see diagrams
www.schischek.com
with ATEX is required (e.g. ExBox).
An over-current protection fuse < 10 A has to be provided by installer.
Note: the initial current is appr. 2 A for 1 second.
SB 5.0
Modulating – with / without spring return (no enforcement) SB 5.1
24...240 V AC/DC
−
+
~
~
PE
PA
1
2
3
Selection of running time for spring return:
Spring return in ~ 10 s = Standard wiring
Spring return in ~ 3 s = Additional wiring on terminal 5
SB 5.2
3-pos. – with / without spring return + feedback
24...240 V AC/DC
−
+
~
~
PE
a
PA
1
2
3
Selection of running time for spring return:
Spring return in ~ 10 s = Standard wiring
Spring return in ~ 3 s = Additional wiring on terminal 5
3-pos. control mode:
▪ a closed, b open – ON (OFF) in acc. to left / right mounting of actuator
▪ b closed, a open – OFF (ON) in acc. to left / right mounting of actuator
Important information for installation and operation
A. Installation, commissioning, maintenance
All national and international standards, rules and regulations for hazardous Ex-areas
must be complied. Certified apparatus must be installed in accordance with manufacturer
instructions. If the equipment is used in a manner not specified by the manufacturer,
the safety protection provided by the equipment may be impaired. For electrical
installations design, selection and erection, EN/ IEC 60079-14 can be used.
For electrical connection an Ex-e terminal box is required (e.g. ExBox-...).
Attention: If the actuator is put out of operation all Ex rules and regulations must be
applied. You have to cut the supply voltage before opening the terminal box !
The cables of the actuator must be installed in a fixed position and protected against
mechanical and thermical damage. Connect potential earth. Avoid temperature transfer
from armature to actuator ! Close all openings with min. IP66.
For outdoor installation a protective weather shield against sun, rain and snow should
be applied to the actuator as well as a constant supply at terminal 1 and 2 for the
integrated heater. During commissioning apply a self adjustment drive.
E X P L O S I O N P R O O F
Self adjustment:
To adjust the signal input / output to the angle of
rotation of the damper / valve the button (T) must
be pushed for a minimum of 3 sec.
Y
Y
mA
V DC
V DC/mA
4
5
1
2
3
4
Reverse function:
Bridge 3 –4 reverses the
input and output signals
Self adjustment:
To adjust the signal input / output to the angle of
rotation of the damper / valve the button (T) must
be pushed for a minimum of 3 sec.
Attention !
V DC/mA
When changing 3-position
mode into modulating
regard function, see
page 4 – Parametrisation D)
b
4
5
1
2
3
4
Reverse function:
Bridge 3 –4 reverses
the output signals
U
U
mA
V DC
5
6
PA
SB 5.3
U
U
mA
V DC
5
6
PA
continue next page
ExMax-S-Y_en
V01 – 16-Nov-2017
3 / 4
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