Rittal 7338.321, Mounting, Installation And Operating Instructions

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● Grey door contact switch (Fig. 30 /3):
Set slide switch "6" to "OFF" and slide switch "7" to "ON" (Fig. 31 /A).
● Transparent door contact switch (Fig. 30 /2):
Set slide switch "6" to "ON" and slide switch "7" to "OFF" (Fig. 31 /B).
A Setting for grey door contact switch
B Setting for transparent door contact
switch
Restart the system after setting the position
of the slide switch using the [Reset] button
(Fig. 31 /1).
5.3.4 Combination of systems
When combining systems DET-AC III Master (Part No. 7338.121), DET-AC III Slave
(Part No. 7338.321) and EFD III (Part No. 7338.221) to protect several switch cabi-
nets, different settings must be made to the systems.
To this end, observe the operating instruction DET-AC III Master and EFD III as well.
5.3.4.1 Compatibility of systems from different series
Systems DET AC Plus Slave of the old series (Part No. 7338.320) can as a general
rule be connected to active extinguishing systems DET-AC III Master of the new
series (Part No. 7338.121). In the same way, systems DET-AC III Slave of the new
series (Part No. 7338.321) can as a general rule be connected to active extin-
guishing systems DET AC Plus Master of the old series (Part No. 7338.120).
The systems are fully functional. However, not all messages are transmitted and
certain functions cannot be performed (e.g. Maintenance Program, external
tank, ...).
5.3.4.2 Networking systems
Up to five systems (active extinguishing system DET-AC III Master or EFD III with
DET-AC III Slave) can be networked with each other via a bus system to protect
several switch cabinets. One data line and one supply line respectively must be laid
for networking
Ä
Chapter 5.3.4.4 „Connecting the energy supply and data line”
on page 46 .
Fig. 31: [Reset] button and DIP
switch "S3"
Mounting and installation
Operating Instructions / DET-AC III Slave / 916007 / 05-2016 / en_US 43