Digital modules
8.4 SM 326; DI 8 x NAMUR
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
125
Technical data
Electrical isolation
Between channels and backplane bus
Yes
Between channels and the power supply of
the electronics
Yes
Between channels
Yes
Permitted potential difference
Between different circuits [Ex]
60 V DC
30 V AC
Between different circuits [non Ex]
75 V DC
60 V AC
Insulation test voltage
Channels to backplane bus and load voltage
L+
1500 V AC
Load voltage L+ to backplane bus
500 V DC or 350 V AC
Between channels
1500 V AC
Current consumption
From backplane bus
90 mA, maximum
From load voltage L+ (without sensor)
160 mA, maximum
Power loss of the module
4.5 W, typical
Status, Interrupts, Diagnostics
Status display
Green LED per channel
Interrupts
Diagnostic interrupt
Programmable
Diagnostics functions
Group fault display
Fail-safe mode display
Diagnostic information can be read out
Programmable
Red LED (group error)
green LED (SAFE)
supported
Sensor Supply Outputs
Number of outputs
8
Output voltage
8.2 V DC
Short-circuit protection
Yes, electronic
Safety notice (see the certificate of conformity in the annex)
Maximum values of input circuits (per channel)
U
0
(No-load output voltage)
10 V, maximum
I
0
(Short-circuit current)
13.9 mA, maximum
P
0
(Load power)
Max. 33.1 mW
L
0
(Permissible external inductance)
Max. 80 mH
C
0
(Permissible external capacitance)
Max. 3 µF
U
m
(Fault voltage)
Max. 60 V DC
max. 30 V AC
T
a
(Permissible ambient temperature)
60 °C, maximum
