The MBB-2 cabinet has a built-in chassis that will accommodate one or two
MMI-6SF modules.
FIGURE 2. MBB-2 CABINET
0
1
2 3 4 5 6
7
8
9
0
7
8
6
5
4
3
2
1
9
10
11
12
13
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15
B
A
S
E
A
D
D
R
E
S
S
A
D
D
R
E
S
S
D
IS
A
B
LE
N
O
N
E
ON
E
TW
O
THR
EE
0
1
2 3 4 5 6
7
8
9
0
7
8
6
5
4
3
2
1
9
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B
A
S
E
A
DDRE
S
S
A
DD
R
E
S
S
DI
S
A
B
LE
NONE
ON
E
TW
O
THR
EE
C0234-00
The front MMI-6SF module positions of each chassis are offset below the rear
MMI-6SF module positions so that all of the status indicators are visible.
CABINETS
An MBB-6, CAB-3 or CAB-4 Series cabinet will house the CHS-6 chassis with
up to six MMI-6SF modules installed on it. Refer to cabinet installation docu-
ments for dimensions.
The MBB-2 cabinet houses one or two MMI-6SF modules on the internal chas-
sis that is part of the cabinet. Refer to cabinet installation documents for
dimensions.
INSTALLATION STEPS
1. Cabinet Mounting
In a clean, dry area, mount the backbox using the four holes provided in the
back surface of the cabinet (Figure 3).
2. Chassis Installation
The CHS-6 chassis is mounted in the MBB-6, CAB-3 or CAB-4 Series cabinet. It
is shipped with two self-threading screws, which are used to fasten the chassis
to the back wall of the cabinet (Figure 4).
FIGURE 3. TYPICAL MOUNTING HOLE LOCATIONS
BACKBOX
MOUNTING
HOLES
C0235-00
FIGURE 4. MOUNTING THE CHS-6 CHASSIS
MOUNT WITH
SELF-THREADING SCREWS
TO BACK OF CABINET
C0236-00
The MBB-2 cabinet comes with the chassis already installed, so no mounting
is necessary.
3. Module Installation
There are two methods for installing a module in the rear position of
a chassis. Method one is for installation of a rear module only, when
no module will be installed in front of it. Refer to Figure 5 for instruc-
tions. Method two is for installation of a rear module when another mod-
ule will be installed in the chassis position in front of it. Refer to Figures
6A – 6C for method two. All necessary screws and standoffs are supplied with
the modules.
FIGURE 5. INSTALLATION OF REAR MODULE ONLY, METHOD ONE
2
3
1
C0237-00
Step 1: Insert the bottom of the MMI-6SF module down into a rear slot on the
chassis.
Step 2: Carefully swing the upper edge of the board back towards the back of
the chassis until it touches the two standoffs.
Step 3: Align two 4-40 screws with the two standoffs and tighten.
Step 4: Address and wire the modules according to the instructions in
this manual.
The steps in Figures 6A – 6C describe and illustrate module installation when
the rear chassis position and the position in front of it will be filled. Front
position installation is possible only if the rear position is filled with an MM
module.
FIGURE 6A. INSTALLATION OF MMI-6SF MODULE IN A REAR
CHASSIS POSITION, METHOD TWO
1
C0225-01
FIGURE 6B.
3
2
4
C0249-01
Step 1: Install two long standoffs in the lower mounting holes using two 4-40
nuts as shown.
Step 2: Insert the bottom of the MMI-6SF module down into a rear slot on the
chassis.
Step 3: Carefully swing the upper edge of the board back towards the back of
the chassis until it touches the two standoffs on the board.
Step 4: Align two 4-40 screws with the two standoffs on the chassis and
tighten.
Step 5: Address and wire the modules according to the instructions in this
manual.
2
I56-2742-009
7/1/2022