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Siemens
RXM21.1 - PL-Link IO Block
CM2N3835en_01
Building Technologies
07 Mar 2012
Mounting notes
The PL-Link I/O-Block can be mounted in any position using the following
attachment methods:
387
3J
06
38
73
J07
Mounting on tophat rail
The housing base contains a snap-on
option to mount on tophat DIN rails, type
EN50022-35x7,5 (snap off using
screwdriver)
Direct mounting
Two predrilled holes to mount using screws
(drilling diagram, see "Dimensions").
The housing base has higher support surfaces.
Screws: Max. dia. 3.5 mm, length min. 38 mm
STOP
Note
Tightening torque for fastening screws: Max. 1.5 Nm
Observe the following for mounting:
•
Heat generated during operation must be removed; make sure the air circulates
sufficiently around the device.
•
Easy access for service.
•
Comply with local installation regulations!
The mounting instructions including drilling template is printed on the device
packing.
Commissioning notes
Outputs are inactive (relay off, triac off) when an application does not use an output.
The outputs can be controlled and the inputs queried as part of a special test mode
(SSA tool).
3-position actuators: No synchronization is executed when the sense of rotation is
changed.
STOP
Caution!
•
The thermal fuse in the transformer may be triggered in case of extended
overload (ca. 4 minutes) or short circuits.
The device must then be replaced.
•
The AC 24 V side does not have protection against faulty wiring on AC 230 V.
•
AC 230 V mains power for supply and relay must be switched off prior to
plugging in and removing plug-in terminals (risk of electric shock!)
•
Supply circuits are interrupted as soon as plug 19/21 is removed from the
device. (Bridges 19-19 and 21-21 are located on the print, not the plug; see
terminal diagram page 11).
Secure state
Functional test
