MC 11 EB-2
Power supply cabinet with external bus, AC version
USER/MAINTENANCE MANUAL
Figures 1a, b, c. Module mounting (a) and fan sides (b) of MC 11 AC EB-2 cabinet, and (c) slot 0 panel.
1. General description
REFER TO SECTION 10 FOR SAFETY AND EMC
RELATED ITEMS FIRST
The MC 11 AC EB-2 19" power supply cabinet
with external bus has 11 free slots for Siqura plug-
in modules (7TE), supplying these with the correct
DC voltages. The 'mains' power connector module
in the remaining, dedicated slot 0 contains a
microprocessor. This processor is used for:
- status monitoring and controlling of SNM
compatible modules and those from the AWS
3000 series in the cabinet;
- controlling two relays;
- reading status information of the cabinet proper.
Two RS-485 serial bus interfaces to the processor
are provided, allowing remote system management
and control. By way of these interfaces, a large
number of MC XX EB-2 cabinets may be linked
with shielded 4(+1 ground)-wire data cable. More
information on system control can be found in
supplementary manuals; the cabinet can be set to
EB compatibility.
The 230 or 120 Vac-powered MC 11 AC EB-2
internals are cooled with two fans. Note that the
cabinet mounting brackets can be put on the module
side or on the fan side (see figures 1a,b).
2.
Indicators and connectors
In figure 1a, SLOT 0-SLOT 11 indicate the twelve
module slots. An external earthing point (1) is
provided on one shorter cabinet side.
The front panel of the controller module has two
9-pin D-connectors for serial (external) com-
munications, and two 2-pin relay connections 1 and
2 combined into one connector (see figures 1a, c
and table 1).
The controller module front panel furthermore
provides a mains connector and an access panel for
the mains fuse (figures 1a,c and 4).
(AC connector)
mains connector
(fuse)
power fuse holder
strain relief stud (M4)
CC
o
(4-p Combicon)
relay contacts 1, 2
DATA
o
,
9-pin fem. D-
connector, 2x
RS-485 serial interfaces
(1 active in EB-1 mode)
Status LEDs
*DC
(green)
DC power OK (internal)
*EB
(green)
control data I/O
*1
(red)
relay 1 activated
*2
(red)
relay 2 activated
Table 1. Panel layout of module S0. Note: the relay
contacts are open when the MC 11 EB-2 is not powered.
3. Installation instructions for EB-2 mode
1. Choose the mode of operation (EB-2 absolute
addressing, EB-2 local addressing, or EB
compatibility mode, see §5).
2. Mount the MC 11 EB-2 cabinet into a standard
19-inch rack, without modules in the slots. Check
whether the specified power voltage of the cabinet
matches the local power supply voltage.
(a)
(b)
(c)
MC11
SLOT 1 SLOT 2 SLOT 3 SLOT 4 SLOT 5
SLOT 7 SLOT 8 SLOT 9
SLOT 6
SLOT 10 SLOT 11
EB-2
SLOT 0
1
© Siqura 2016
Version 041808-2d
MC11AC EB-2 (MW10)
