Installation Data
(Catalog Number 2755-NB0, -NB1, -NB2)
This document shows how to install the following components in the
2755-DSxx➀ and 2755-DDxx➀ Bar Code Decoders.
• I/O Module Board (Catalog No. 2755-NB1 and -NB2).
• I/O Connector and Cables (Catalog No. 2755-NB0).
• I/O Modules supplied with Catalog No. 2755-NB2. The I/O
modules are also available as separate catalog numbers as shown
on page 2.
Installing I/O Module Board
(Catalog No. 2755-NB1,-NB2)
This section shows how to install the I/O Module Board (Catalog
No. 2755-NB1 and -NB2) in the decoder. Refer to Figure 1 during
installation.
To install the I/O Module Board:
1. Remove AC power from decoder.
!
!
ATTENTION: Remove power from decoder before
installing the I/O Module Board. Failure to do so
could result in personal injury.
ATTENTION: ESD (Electrostatic Discharge) may
cause damage to electronic equipment. Take standard
precautions to minimize the possibility of an
electrostatic discharge when installing this option.
2. Loosen the two cover screws and open decoder cover.
3. Locate the four metal standoffs and one plastic support standoff
on the logic board. Also locate the connector on the logic board
labeled CON9 DISCRETE I/O. Align the I/O Board so that the
connector strip is positioned over CON9 DISCRETE I/O.
4. Place the I/O Module Board over the standoffs so that the plastic
center support snaps into the center hole on the I/O Board. Press
down firmly.
➀ Catalog numbers are incomplete. The 2755-DS and -DD decoders are available in different
configurations.
2
Bulletin 2755 I/O Module Board and Connector
5. Fasten the four corners of the I/O Board using the (4) #6-32
screws supplied. Tighten to a torque of 11 ±2 in-lbs.
6. Insert the connector end of the flat cable into the CON9
DISCRETE I/O connector on the logic board and press firmly
until seated.
Figure 1
CON9 Discrete I/O
Optional LCD Display
I/O Module Board
ÍÍÍÍÍÍÍ
ÍÍÍÍÍÍÍ ÍÍ
ÍÍ
ÍÍÍÍÍÍ
ÍÍÍÍÍÍ
#6-32 Mtg. Screws (4)
Plastic Center Post
Catalog No. 2755-NB2 is supplied with (2) DC output modules and
(1) DC input module. The specifications for these modules is shown
in the tables below. For details on how to install the modules in the
I/O Board, see the section on Installing I/O Modules.
(2) DC Output Modules
(functions as a switch not as a power source)
(1) DC Input Module
Catalog Number
2755–0B5S
Catalog Number
Maximum Voltage
Minimum Voltage
Maximum Peak Off State Voltage
Maximum Peak Off State Leakage
Maximum On-State Current
Minimum On-State Current
Maximum 1 Second Surge
Peak On-State Voltage
60 VDC
3.0 VDC
60 VDC
1.0 mA
0.5 A DC
10 mA DC
1.5 A DC
1.5 V DC
Maximum Input Voltage
Minimum Line Voltage
Input Resistance
Maximum Input Current
Drop Out Current
Allowable Off-State Input Current
Allowable Off-State Input Voltage
2755–IB5S
32 VDC
3.3 VDC
1 k ohm
32mA DC @32VDC
1.0 mA DC
1.0 mA DC
2.0 VDC
For details on the availability of other I/O modules, see decoder
User Manual.
Bulletin 2755 I/O Module Board and Connector
Installing I/O Connector
(Catalog No. 2755-NB0)
3
This section shows how to install the Catalog No. 2755-NB0 I/O
Connector in the decoder. Refer to Figure 2 during installation.
The Catalog No. 2755-NB0 I/O Connector is shipped with:
• Connector
• Washer
• Cable (6 foot/1.83 meter)
• Nut
Note: The connector wires to the I/O Module Board. See the Wiring
I/O Modules section for details.
To install the I/O Connector:
1. Remove AC power from decoder.
!
!
ATTENTION: Remove power from decoder before
installing the I/O Connectors. Failure to do so could
result in personal injury.
ATTENTION: ESD (Electrostatic Discharge) may
cause damage to electronic equipment. Take standard
precautions to minimize the possibility of an
electrostatic discharge when installing this option.
2. Loosen the two cover screws and open decoder cover.
3. Remove the plug from one of the I/O module wiring holes on the
decoder enclosure.
– For a NEMA Type 1 enclosure, squeeze the two tabs inward
while pushing the plug out from the inside.
– For a NEMA Type 4 enclosure, push outward with your finger
on the center of the plug while pressing down on the inside lip
of the plug.
4
Bulletin 2755 I/O Module Board and Connector
4. Remove I/O Connector and parts from the package.
5. Slip the rubber washer over the wires and down over the threads
to the flange on the connector.
6. Insert the wire end of the connector into the I/O module wiring
hole of the decoder until the washer and connector flange are
seated against the outside of the enclosure.
7. Slip the lock nut over the end of the wires and tighten the lock nut
to a torque of 70-100 in-lbs while holding the connector.
!
ATTENTION: Torque the lock nut only. Do not
torque the connector itself.
Repeat steps 3 - 7 for the second connector, if required.
Bulletin 2755 I/O Module Board and Connector
Figure 2
I/O Module Wiring Holes
Switch and Power
Connector Area
Wiring I/O Modules
Locknut
Locknut
Washer
I/O Connector
Washer
I/O Connector
This section shows how to wire the cables of the I/O Connector
(Catalog No. 2755-NB0) to the I/O modules. Refer to Figure 3
during installation.
Below each module position on the I/O board is a terminal block
connector which accepts up to 12 gauge wire.
To wire each output module:
1. Strip 1/4 inch of the insulation from cable wires (removing
wire particles).
2. Loosen terminal screws on pull-apart connector.
For easier installation, remove connector from the I/O board
by gently lifting the connector.
3. Insert wires into connector. Note polarity on module
connectors when installing DC modules.
4. Tighten terminal screws on connector to secure the wires.
5. Replace pull-apart connector (if removed from I/O board).
5
Bulletin 2755 I/O Module Board and Connector
Figure 3
I/O Board
I/O Modules
MOD1 MOD2 MOD3 MOD4
MOD5 MOD6
MOD7 MOD8
MOD8 accepts
input or output module
12V DC Power Source
100mA Max
Hold Down Screws
–1+
–2+
–3+
–4+
F
3
F
4
–5+
–6+
–7+
–8+
F
7
F
8
–
+
Module Pull-Apart
Connectors (8)
F
1
F
2
F
5
F
6
Locknut
Locknut
Washer
Washer
I/O Connector
6+
7–
7+
8–
8+
–4+
–5+
–6+
–7+
–8+
ORANGE
BLUE
WHITE/BLACK
WHITE
RED
GREEN
RED/BLACK
BLACK
–3+
GREEN
RED/BLACK
5+
6–
–2+
WHITE
RED
1+
Blue
White/Black 2–
Black
2+
3–
White
Red
3+
Green
4–
Red/Black 4+
–1+
BLACK
Pin #
Wire Color Left Right
1–
5–
Orange
I/O Connector
I/O Connector Wiring
WHITE/BLACK
Recommended Wiring
12 V
DC
ORANGE
BLUE
6
Bulletin 2755 I/O Module Board and Connector
Installing I/O Modules
7
This section shows how to install I/O modules. Refer to Figure 3
during installation.
The 2755-NB2 I/O Board is supplied with (2) DC output modules
and (1) DC input module. Figure 3 shows the output modules
installed in positions MOD1 and MOD2. The input module is
installed in position MOD8.
To install modules in the I/O board:
1. Remove AC power from decoder.
!
!
ATTENTION: Remove power from decoder before
installing the I/O Modules. Failure to do so could
result in personal injury.
ATTENTION: ESD (Electrostatic Discharge) may
cause damage to electronic equipment. Take standard
precautions to minimize the possibility of an
electrostatic discharge when installing I/O modules.
2. Loosen the two cover screws and open decoder cover.
3. Plug module into MOD position on I/O board. Carefully align
module pins over sockets in board before inserting module.
Note: Module pins must puncture the silicon seal of the I/O board
sockets.
4. Tighten the hold-down screw to secure module in position.
8
Bulletin 2755 I/O Module Board and Connector
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