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ExMax-...-Y
Special option
Electrical connection
All actuators are equipped with a universal supply unit working at a voltage range from
24...240 VAC/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.
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.
Modulating / 3-pos. – with / without spring return
24...240 VAC/ DC
−
+
~
~
PE
a
b
1
2
3
4
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 enforcement) SB 4.1
24...240 VAC/ DC
−
+
~
~
PE
1
2
3
4
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
... -CTM
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
VDC
VDC/mA
mA
VDC
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
U
U
mA
VDC
VDC/mA
mA
VDC
1
2
3
4
5
6
Reverse function:
Bridge 3 –4 reverses the
input and output signals
Safe area
supply *
24...240 VAC/DC ± 10 %
* electrical wiring see diagrams
www.schischek.com
... -VAM
Parameters, adjustments and failure indication
Switch – Push button – Lamp
for adjustment
(behind the blanking plug)
10-position switch (S)
Push button (T)
3-colour LED
SB 4.0
Parameter selection
Example:
ExMax-50.75-Y
Requested parameter:
Torque
75 Nm
Motor running time 90 s /90°
Result:
Switch position 07
PA
Functions, adjustments and parameters
A) Self adjustment of angle of rotation
Turn switch (S) to position 02 (low torque) or 07 (high torque). Press button (T) for
a minimum of 3 seconds. The actuator drives to both end positions and detects the
blocking positions. The LED flashes GREEN during adjustment.
The adjustment takes about 180 seconds (90 sec. "On", 90 sec. "Off").
B) Selecting motor running time and torque
Adjust parameters only if actuator is in idle state or without applied potential.
Turn switch (S) to the position required for the intended operation acc. to table
above. The selected parameters will be carried out at the actuator's next operation.
C) Changing modulating operation to 3-pos. operation with feedback
Modulating mode: The LED lights GREEN, potential applied.
Press button (T) briefly 3 times:
▪ each for at least 0.2 seconds
▪ altogether within max. 5 seconds
The LED changes from steady GREEN to steady YELLOW*.
D) Changing 3-pos. operation with feedback to modulating operation
3-pos. mode: The LED lights YELLOW*, potential applied.
PA
Press button (T) briefly 3 times.
The LED changes from steady YELLOW* to steady GREEN.
E) Additional information for control in 3-pos. operation with feedback
a closed, b open
b closed, a open
The rotation direction (I and II) depends on left /right mounting of the actuator to the
damper. To reverse the rotation direction (by motor) exchange the electrical wiring
of terminal 3 and 4.
In 3-pos. operation with feedback the Y-inputs are without function.
F) Inverting
Bridging signal wires 3 – 4 (cable B) inverts the function of input signals Y and feed-
back signals U.
* Note: "YELLOW" may vary from yellowish to orange.
During commissioning apply a self adjustment drive.
Regard duty cycle at motor running times !
Never use spring return actuators without external load.
E X P L O S I O N P R O O F
Type
Torques
ExMax- 50.75-Y ►
50 Nm
ExMax- 100-Y
►
100 Nm
ExMax- 30-YF
►
30 Nm
ExMax- 50-YF
►
50 Nm
▼
Running times
Position of switch (S)
40 s /90°
►
00
60 s /90°
►
01
90 s /90°
►
02
120 s /90°
►
03
150 s /90°
►
04
= direction I
a and b closed
= direction II
a and b open
!
!
Attention
S
T
75 Nm
▼
05
06
07
08
09
= motor doesn't work
= motor doesn't work
ExMax-M-Y_en
V01 – 19-Sep-2018
3 / 4
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