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20.7
Digital outputs, optional boards
Optional card
Relay output, dual nor-
mally open contacts
Relay output, single
Changeover contact
Solid state relay triac
e
PhotoMOS®
solid state relay
Logic output 0/12 V
Logic output 0/22 V
a
The maximal ampacity of the contacts must not be exceeded.
b
Combining a mains voltage circuit with a protective low-voltage circuit on the "dual normally open con-
tact" option is not admissible.
c
A varistor protects the triac against excessive voltages such as those that can occur during switching.
d
PhotoMOS® is a registered trademark of Panasonic.
e
Current limiting via the logic output of the device
20.8
Voltage supply outputs base unit
Description
DC 12 V/24 V
a
voltage supply
(e.g. for external trans-
mitters)
DC ±5 V voltage supply
(e.g. for ISFET pH-sen-
sors)
a
based on order code
Switching out-
Ampacity at re-
put
sistive load
2 normally open
3 A at AC 250 V 150,000
b
contacts
1 changeover
contact
Switching out-
1 A at AC 230 V Wear-free
put with triac
(protected by
c
varistor)
Switching out-
200 mA at
put with
DC 45 V and/or
d
PhotoMOS®
AC 30 V
High/low signal 20 mA
High/low signal 30 mA
Output voltage
DC 12 V +15 / -25%
DC 24 V +5 / -5 %
DC +5 V +10 / 0 %
-5 V DC ±15%
20 Technical data
Contact life
switching cycles
Wear-free
e
Wear-free
e
Wear-free
Ampacity
25 mA
42 mA
200 mA
40 mA
a
Special features
-
-
-
not short-circuit-
proof;
max. voltage
DC 45 V
AC 30 V
-
-
Connection
Spring-cage ter-
minals
119
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