Product Overview

CA1N4591E / 11.1998 Siemens Building Technologies
4/6 Landis & Staefa Division
b) 4-wire connection to controller
ZM../A supplied from controller transformer or (over longer distances) from
a separate transformer.
50212A
1
2
3
4
~
~
–
+
–
+
AC 24 V
ZM100/A
ZM101/A
ZM200/A
DC 0 ... 10 V
AC 24 V
GND
~
~
5
6
Controller
Twisted pairs
2 ZM../A with DC 4 ... 20 mA control signal
ZM../A supplied from controller transformer or (over longer distances) from
a separate transformer.
Note
Several DC 4 ... 20 mA receivers can be
driven by the same control signal (series
connection – check input impedance!).
50210 A
1
2
3
4
~
~
–
+
ZM120/A
ZM121/A
ZM220/A
DC 4 ... 20 mA
5
6
AC 24 V
~
~
–
+
Controller
Twisted pairs
Controller
Twisted pairs
Controller
Twisted pairs
50628
1
2
3
4
~
~
–
+
–
+
AC 24 V
ZM100/A
ZM101/A
ZM200/A
DC 0 ... 10 V
AC 24 V
GND
~
~
5
6
AC 24 V
50629
1
2
3
4
~
~
–
+
ZM120/A
ZM121/A
ZM220/A
DC 4 ... 20 mA
5
6
AC 24 V
~
~
–
+
AC 24 V