Siemens SIPART PS2 6DR50 Series, Manual

Page: 32 / 160

Design and Functional Principle
32
SIPART PS2 Manual
A5E00074631--06
Insert the I
y
module (3) in the lower slot of the rack up to the stop and
use the 6-pin flat ribbon cable (6) provided to connect it to the
motherboard (see figure 2-11, page 28).
2.7.4 Alarm module
The alarm module contains
S
3 digital outputs and
S
1 digital input
The digital outputs serve to output fault messages and alarms. The
configuration is described in chapter 4.4, page 95, with the para-
meters 44 to 54.
By an external signal applied at digital input (DI2) the actuator can be
blocked or driven to its limit positions for example depending on the
configuration. The configuration is described in chapter 4.4, page 95,
with the parameters 43.
The alarm module is available in two versions:
S
explosion protected for connecting to switching amplifier
EN 60947-5-6
S
non-explosion protected for connection to voltage sources with a
maximum 35 V
The semiconductor outputs of the alarm module report an alarm (signal
state Low) by switching off with high resistance. They are conductive in
the High state (without alarm). The dynamic control makes them error
self-reporting.
The outputs are potentially isolated from the basic circuit and each
other.
The digital input is double.
S
one potential isolated for voltage level
S
one not potential isolated for floating contacts
These two inputs are designed as logic OR links.
Insert the alarm unit (4) below the motherboard in the rack up to the
stop and use the 8-pin flat ribbon cable (5) to connect it to the mother-
board (see figure 2-11, page 28).
Installation
Function
Installation