Schmalz SMPi 20, Operating Instruction, Page: 38 / 50

S
CHMALZ
SCP
I
/ SMP
I
7-38
7 T
ECHNICAL DATA
E
LECTRICAL DATA
Operating the ejector system outside of the specified values can result in
damage to the system and attached components.
E
LECTRICAL PARAMETERS
Parameter
Sym
bol
Limit values
Unit Comment
min. typ. max.
Power supply for sensor U
S
20,9 24 26,4 V DC PELV
1)
Rated current for sensor 1,3 W I
S
 
100
2)
mA No signal output
Voltage for signal outputs (PNP) U
O
U
S
-2

V
S
V DC I
O
< 150 mA
Current for signal outputs (PNP) I
O
 
150
2)
mA Short-circuit-proof
3)
Voltage for suction signal input U
IS
9

U
S
V DC in reference to Gnd
S
Rated current for suction signal input I
IS

5

mA
Voltage for blow-off signal input U
IB
22,8 24 26,4 V DC in reference to Gnd
A
Rated current for blow-off signal input I
IB
 
75 mA
Incl. current for blow-
off valve
Pulse length for suction valve t
P
50
 
ms
Reaction time of signal inputs t
I

15

ms
Reaction time of signal outputs t
O

2

ms
1)
The power supply must correspond to the regulations in accordance with EN60204 (protected extra-low voltage).
The power supply, signal inputs and outputs are all protected against reverse polarity.
2)
Pepetitive peak forward current lasting 60ms, repetition rate 560ms.
3)
The signal output is secured against short circuits. However, the signal output is not secured against overloading.
Constant load currents of > 0.15 A can lead to impermissible heating and subsequent destruction of the ejector.