Weidmuller ACT20X - Manual (Page 25)

Product Installation / Operation, ACT20X-HDI-SDO (NAMUR Pulse Isolator)
1066540000/01/12.11 25
Ch
a
n
n
e
l 1
:
Ch
a
n
n
e
l 2
:
Zone 0, 1, 2, 20, 21, 22 /
Cl. I/II/II I, div. 1 gr. A-G Zone 2 / FM Cl. I
div. 2, gr. A-D or safe area
Power Supply
Input Signals Output Signals
44
43
42
41
24
23
22
21
14
13
12
11
51
52
53
54
Opto +
Opto -
Opto -
Opto +
Relay
Relay
Relay
Channel 1:
N.O. or
N.C.
Relay
Channel 2:
N.O. or
N.C.
Ch. 2:
Ch. 1:
NAMUR
+
-
Rp
Rs
Rp
Mechanical
switch
Module status
Module status
Gnd. -
Supply +19.2...31.2 VDC
N.C.
NAMUR
+
-
Rp
Rs
Rp
Mechanical
switch
Illustration 7-3: Applications
Input NAMUR / Mechanical Switch with Series and Parallel Resistance
NAMUR sensor, according to EN 60947-5-6
Mechanical Switch, Series resistance (R
S
) nom. 750 Ω
Mechanical Switch, Parallel resistance (R
P
) nom. 15 kΩ
Frequency range 0…5 kHz
Min. pulse length > 0.1 ms
Resistance nom. 1 kΩ
Trigger level, signal < 1.2 mA, > 2.1 mA
Trigger level, cable fault < 0.1 mA, > 6.5 mA