Allen-Bradley GuardPLC 160 User manual

Installation Instructions
GuardPLC 1600 Controllers
Catalog Numbers 1753-L28BBB-M, 1753-L28BBB-P
Topic Page
Important User Information 2
About the GuardPLC 1600 Controller 3
General Safety 3
Install the Controller 4
Mount the Controller 5
Ground the Controller 5
Wire the Controller 6
Make Communication Connections 12
Reset Push Button 14
Controller Tests 15
Status Indicators 16
Specifications 17
Additional Resources 20

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Important User Information
Solid-state equipment has operational characteristics differing from those of electromechanical equipment.
Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls (Publication
SGI-1.1 available from your local Rockwell Automation sales office or online at
http://www.rockwellautomation.com/literature/) describes some important differences between solid-state
equipment and hard-wired electromechanical devices. Because of this difference, and also because of the
wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must
satisfy themselves that each intended application of this equipment is acceptable.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages
resulting from the use or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many
variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot
assume responsibility or liability for actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits,
equipment, or software described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell
Automation, Inc., is prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
ATTENTION: Identifies information about practices or circumstances that can
cause an explosion in a hazardous environment, which may lead to personal
injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can
lead to personal injury or death, property damage, or economic loss.
Attentions help you identify a hazard, avoid a hazard and recognize the
consequences.
SHOCK HAZARD: Labels may be on or inside the equipment, for example,
drive or motor, to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example,
drive or motor, to alert people that surfaces may reach dangerous
temperatures.
IMPORTANT Identifies information that is critical for successful application and
understanding of the product.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
About the GuardPLC 1600 Controller
The GuardPLC 1600 controller is a programmable electronic system featuring 20 digital inputs,
8 digital outputs, and 4 connections for GuardPLC Ethernet communication.
General Safety
Prevent Electrostatic Discharge
ATTENTION: Personnel responsible for the application of safety-related
programmable electronic systems (PES) shall be aware of the safety
requirements in the application of the system and shall be trained in using the
system.
ATTENTION: This equipment is sensitive to electrostatic discharge, which can
cause internal damage and affect normal operation. Follow these guidelines
when you handle this equipment:
•Touch a grounded object to discharge static potential.
•Wear an approved wrist-strap grounding device.
•Do not touch connectors or pins on component boards.
•Do not touch circuit components inside the equipment.
•Use a static-safe workstation, if available.
•Store the equipment in appropriate static-safe packaging when not in use.
Digital Outputs
Digital Inputs
Voltage Supply
Connection
Ethernet Ports (on top of controller)
Ethernet Ports (on bottom of controller)

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Environment and Enclosure
Install the Controller
Follow these steps to install the GuardPLC 1600 controller.
1. Mount the controller to a DIN rail.
2. Ground the controller.
3. Wire the controller.
4. Make communication connections.
This publication describes these steps in detail.
ATTENTION: This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications (as defined in
IEC publication 60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties
with electromagnetic compatibility in residential and other environments due
to conducted as well as radiated disturbances.
This equipment is supplied as open-type equipment. It must be mounted within
an enclosure that is suitably designed for those specific environmental
conditions that will be present and appropriately designed to prevent personal
injury resulting from accessibility to live parts. The enclosure must have
suitable flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
non-metallic. The interior of the enclosure must be accessible only by the use
of a tool. Subsequent sections of this publication may contain additional
information regarding specific enclosure type ratings that are required to
comply with certain product safety certifications.
In addition to this publication, see:
•Industrial Automation Wiring and Grounding Guidelines, Rockwell
Automation publication 1770-4.1, for additional installation requirements.
•NEMA 250 and IEC 60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosure.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Mount the Controller
The controller cannot be panel-mounted. Mount the controller to a DIN rail by following these
steps.
1. Hook the top slot over the DIN rail.
2. Insert a flathead screwdriver into the gap
between the housing and the latch and pull
the latch downward.
3. Hold the latch down as you push the housing
back onto the DIN rail.
4. Release the latch to lock the device onto the
rail.
Ground the Controller
The controller is functionally grounded through its DIN rail connection. A protective
earth-ground connection is required and is provided through a separate grounding screw on the
upper left of the housing and marked with the grounding symbol .
You must also provide an acceptable grounding path for each device in your application. For
more information on proper grounding guidelines, refer to the Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1.
IMPORTANT For effective cooling, mount the controller following these guidelines.
•Mount the controller horizontally.
•Provide a gap of at least 100 mm (3.94 in.) above and below the controller.
•Select a location where air flows freely or use an additional fan.
•Do not mount the controller over a heating device.
TIP To remove the controller from the DIN rail, insert a flathead screwdriver
into the gap between the housing and the latch and pull the latch
downward as you lift the controller off of the rail.
ATTENTION: This product is grounded through the DIN rail to chassis ground.
Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The
use of other DIN rail materials (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure the DIN rail to the mounting surface approximately every
200 mm (7.8 in.) and use end-anchors appropriately.
DIN Rail
(1) Top Slot
Latch
(3)
(2)

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Wire the Controller
The following sections describe how to connect the voltage supply and wire the controller’s
digital inputs and outputs.
Connect the Voltage Supply
The 24V DC voltage supply must feature galvanic isolation (in accordance with
EN 60950 or UL 1950) since inputs and outputs are not electrically isolated from the processor.
To comply with CE Low Voltage Directives (LVD) and UL restrictions, you must use either a
Safety Extra Low Voltage (SELV), or a Protected Extra Low Voltage (PELV) power supply to
power this controller. A SELV supply cannot exceed 30V rms, 42.4V peak, or 60V DC under
normal conditions and under single-fault conditions. A PELV supply has the same rating and is
connected to protected earth.
The supply voltage is connected via a 4-pin connector that accommodates wire sizes up to
2.5 mm2(14 AWG). You need to connect only one wire to L+ and one wire to L-. Both L+ and
L- terminals are internally connected, so you can daisy-chain 24V DC power from the
GuardPLC controller to other devices in the panel by using the remaining terminal.
IMPORTANT Protect the controller with a slow-blowing fuse.
IMPORTANT The GuardPLC 1600 controller can draw up to 8 A. The controller needs 0.5 A
to operate. Up to 7.5 A can be used to source voltage power for inputs and
outputs connected to the controller.
ATTENTION: Do not reverse the L+ and L- terminals or damage to the
controller will result. There is no reverse polarity protection.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Safety-related Digital Inputs
The controller has 20 digital inputs whose status is indicated via status indicators when the
controller is in RUN mode.
LS+ is a voltage source that provides 24V DC for a group of four dry contact inputs. There are
five groups on the GuardPLC 1600 controller.
If devices require 24V DC to operate and use the same power source as the controller, then wire
the outputs of the device directly to inputs on the controller.
123456
1234
1L-
L-L- L+ L+
L-DO 2
(2A)
34
1LS+- LS+ LS+ LS+ LS+L-
D1
234
56
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
789101112
78910
5L- L-DO 6
(2A)
7 8
11 12
COMM1
MODBUS
RS-485
24V DC
COMM2 COMM3 RUN
24 V DC
GuardPLC Ethernet
10/100 BaseT
PROG
ERROR
FAULT
FORCE
BL
OSL
PROFIBUS
3(—) 4
(—)
3(—) 4
(—)
1753-L28BBBM
20 DC Inputs
8 DC Outputs
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
L-L- L+ L+
24V DC
24VDC
Power
Supply
COM
+
Connection of Voltage Supply to
Input Device
123456
1234
1L-
L-L- L+ L+
L-DO 2
(2A)
34
1LS+- LS+ LS+ LS+ LS+L-
D1
234
56
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
789101112
78910
5L- L-DO 6
(2A)
7 8
11 12
COMM1
MODBUS
RS-485
24V DC
COMM2 COMM3
RUN
24 V DC
GuardPLC Ethernet
10/100 BaseT
PROG
ERROR
FAULT
FORCE
BL
OSL
PROFIBUS
3
(—)
4
(—)
3
(—)
4
(—)
1753-L28BBBM
20 DC Inputs
8 DC Outputs
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
L-L- L+ L+
24V DC
COM
24VDC
Power
Supply
COM
+
+
Light Curtain
(or any Safety Input)
Connection of Voltage Supply to
Input Device

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Devices with their own dedicated power supply can also be connected. Connect the reference
pole of the external power supply to the L- reference pole of the input.
The safe state of an input is indicated by a 0 signal being passed to the user program logic. If the
test routines detect a fault in the digital inputs, a 0 signal is processed in the user program for the
defective channel. When a fault occurs, the inputs are switched off (0).
Follow the closed-circuit principle for external wiring when connecting sensors. To create a safe
state in the event of a fault, the input signals revert to the de-energized state (0). The FAULT
status indicator activates.
Digital Input Terminals
TIP For more information on input wiring, see the GuardPLC Controller Systems
User Manual, publication number 1753-UM001.
123456
1234
1L-
L-L- L+ L+
L-DO 2
(2A)
34
1LS+- LS+ LS+ LS+ LS+L-
D1
234
56
13 14 15 16 17 18
5L-
D1
678
19 20 21 22 23 24
9L-
D1
10 11 12
25 26 27 28 29 30
13 L-
D1
14 15 16
31 32 33 34 35 36
17 L-
D1
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42
789101112
78910
5L- L-DO 6
(2A)
7 8
11 12
COMM1
MODBUS
RS-485
24V DC
COMM2 COMM3
RUN
24 V DC
GuardPLC Ethernet
10/100 BaseT
PROG
ERROR
FAULT
FORCE
BL
OSL
PROFIBUS
3
(—)
4
(—)
3
(—)
4
(—)
1753-L28BBBM
20 DC Inputs
8 DC Outputs
1LS+- L-
D1
234
13 14 15 16 17 18
13 14 15 16 23 24
L-L- L+ L+
24V DC
24VDC
Power
Supply
COMCOM
+
24VDC
Power
Supply
COM
+
+
Light Curtain
(or any Safety Input)
Connection of Devices with Dedicated Power Supplies
1LS+- LS+LS+LS+LS+L-
DI
234
13 14 15 16 17 18
5L-
DI
678
19 20 21 22 23 24
9L-
DI
10 11 12
25 26 27 28 29 30
13 L-
DI
14 15 16
31 32 33 34 35 36
17 L-
DI
18 19 20
37 38 39 40 41 42
19 20 21 22 23 2413 14 15 16 17 18 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Terminals accommodate wires up to 1.5 mm2(16 AWG). See the terminal torque specifications
on page 17. Digital inputs are connected to these terminals.
LS+, not L+, should be used for short-circuit protection. Each LS+ features individual
short-circuit and EMC protection that make it important to use LS+ for only its four related
inputs.
Terminal Number Designation Function
13 LS+ Sensor supply for inputs 1…4
14 1 Digital input 1
15 2 Digital input 2
16 3 Digital input 3
17 4 Digital input 4
18 L- Reference pole
19 LS+ Sensor supply for inputs 5…8
20 5 Digital input 5
21 6 Digital input 6
22 7 Digital input 7
23 8 Digital input 8
24 L- Reference pole
25 LS+ Sensor supply for inputs 9 …12
26 9 Digital input 9
27 10 Digital input 10
28 11 Digital input 11
29 12 Digital input 12
30 L- Reference pole
31 LS+ Sensor supply for inputs 13…16
32 13 Digital input13
33 14 Digital input 14
34 15 Digital input 15
35 16 Digital input 16
36 L- Reference pole
37 LS+ Sensor supply for inputs 17…20
38 17 Digital input 17
39 18 Digital input 18
40 19 Digital input 19
41 20 Digital input 20
42 L- Reference pole

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Line Control
Line control is a short-circuit and line-break monitoring system (that is, E-stop inputs) that can
be configured for the GuardPLC 1600 system. Up to eight digital outputs (DO1…DO8) can be
configured as pulsed outputs. The example below shows two pulse outputs connected to the
digital inputs (DI) of the same system. As a result, the connections to the digital inputs (DI) are
monitored.
Inputs are set to 0, a fault code is generated, and the FAULT status indicator is on when:
•a short-circuit occurs between two parallel connections.
•two connections are reversed.
•earth fault occurs on one of the lines (only with earthed reference pole).
•a line breaks or one of the contacts opens (that is, when one of the E-stop off switches is
pressed in the example above).
Safety-related Digital Outputs
The controller has eight digital outputs (DO1…DO8) whose status is indicated via status
indicators.
An output is in a safe state when it is de-energized. When a fault occurs, all outputs are switched
off.
Outputs 1…3 and 5…7 can have a load of 0.5 A at an ambient temperature of 60 °C (140 °F).
Outputs 4 and 8 can each have a load of 1 A at an ambient temperature of 60 °C (140 °F), or up
to 2 A at an ambient temperature of 50 °C (122 °F).
With an overload, one or all of the outputs are turned off. When the overload is eliminated, the
outputs are activated again according to the specified value.
Although the external line of an output is not monitored, a short-circuit will be indicated.
IMPORTANT For information on how to configure inputs and outputs for line control, see
the GuardPLC Controller Systems User Manual, publication 1753-UM001.
Emergency OFF 1 Emergency OFF 2
DO 1 2
DI 1 2 DI 3 4

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Digital Output Terminals
Terminals accommodate wires up to 1.5 mm2(16 AWG). See the terminal torque specifications
on page 17. Digital outputs are connected to these terminals.
For connection of a load, the reference pole L- of the corresponding channel group must be used
(2-pole connection). Although L- at terminals 1 and 6 and at 7 and 12 is connected internally to
L- on the power supply input, it is strictly recommended to use 1 and 6 for outputs 1…4 only and
7 and 12 for outputs 5… 8 only. EMC testing was performed in this manner.
Terminal Number Designation Function Current
1 L- Reference pole —
2 1 Digital output 1 0.5 A
3 2 Digital output 2 0.5 A
4 3 Digital output 3 0.5 A
5 4 Digital output 4 (for increased load) 2.0 A
6 L- Reference pole —
7 L- Reference pole —
8 5 Digital output 5 0.5 A
9 6 Digital output 6 0.5 A
10 7 Digital output 7 0.5 A
11 8 Digital output 8 (for increased load) 2.0 A
12 L- Reference pole —
123456
1234
1L- L-DO 2
(2A)
34
56
789101112
78910
5L- L-DO 6
(2A)
7 8
11 12

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Example: Connecting Actuators to the Outputs
The digital outputs can be pulsed with the safety-related digital inputs of the same device. This
enables short-circuit or line-break monitoring to be carried out (that is, emergency stop buttons
to conform to Cat. 4 in EN954-1).
Make Communication Connections
The controller supports separate connections for safety and nonsafety-related communication.
Connections for Safety-related Communication
The controller has four 10/100BaseT, RJ45 connectors to provide communication via
GuardPLC Ethernet protocol to distributed I/O and other GuardPLC controllers, OLE for
Process Control (OPC) servers, and with the programming software. Connectors 1 and 2 are on
the bottom side on the left. Connectors 3 and 4 are on the top side on the left. All four
connectors and the GuardPLC processor are connected together by an internal Ethernet switch.
The switches are auto-detect. Either crossover or straight-through Ethernet cabling can be used.
Star or line configurations are available. Make sure that a network loop is not generated. Data
packets must be able to reach a node only via a single path.
TIP Inductive loads can be connected without a protection diode on the load.
However, Rockwell Automation strongly recommends that a protection diode be
fitted directly to the load to suppress any interference voltage. A 1N4004 diode
is recommended.
ATTENTION: Pulse outputs may not be used as safety-related outputs.
TIP For more information on output wiring, see the GuardPLC Controller Systems
User Manual, publication 1753-UM001.
DO 1 DO 2 DO 3 DO 4 L- L-

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
OPC Server
The GuardPLC 1600 controller is an OPC client. An OPC server, catalog number 1753-OPC,
is available from Rockwell Automation and lets computer applications read and write data to and
from the GuardPLC controller.
MAC Address
The media access control (MAC) address of the controller can be found on the label positioned
over both lower RJ45 connections.
Connections for Nonsafety-related Communication
The three 9-pin D-shell connectors on the front of the controller provide the following
communication options.
The pin assignments of the D-shell connector are listed in this table.
IP Address and System ID (SRS)
A transparent label provided with the controller can be used to note the IP address and system
ID (SRS). The default value for the IP address is 192.168.0.99. The default SRS is 60000.
Designation Function
COMM1 (RS-485) Modbus Slave (1753-L28BBB-M)
Profibus-DP-Slave (1753-L28BBB-P)
COMM2 Not used
COMM3 (RS-485) GuardPLC ASCII protocol
Connection Signal Function
1——
2 RP 5V, decoupled with diodes
3 RxD/TxD-A Receive/transmit data A
4 CNTR-A Control signal A
5 DGND Data reference potential
6 VP 5V, positive pole of supply voltage
7——
8 RxD/TxD-B Receive/transmit data B
9 CNTR-B Control signal B
IMPORTANT If you attach the label to the controller, make sure you do not cover any of the
ventilation slots.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Reset Push Button
The controller is equipped with a reset push button. Reset via the push button is necessary under
the following conditions.
•You forget the password to go online via the programming software.
•You are unable to determine the IP address and SRS of the controller.
The push button is accessible through a small round hole at the top of the housing,
approximately 4…5 cm (1.6…2.0 in.) from the left rim and recessed approximately 9.5 mm
(0.375 in.).
To reset, press and hold the push button for 20 seconds while rebooting the device by cycling
power. Pressing the Reset push button during operation has no affect.
With activation of the reset button:
•all accounts are deleted except for the default account.
•IP Address and System ID (SRS) are set to their default values.
The next time you cycle power, these settings will be restored to the last values stored into
nonvolatile memory. This means that either the settings prior to the reset will be restored, or if
any settings were changed after the reset, those new settings will still be in effect.
IMPORTANT Activate the reset push button using an insulated pin to prevent short-circuits.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Controller Tests
In addition to the tests for safety, the controller tests the supply voltage and controller
temperature.
Supply Voltage Tests
The supply voltage (24V DC) is monitored and the alarm and system shutdown are controlled
according to the voltage levels listed below.
Temperature Tests
The temperature of the controller is automatically and continuously monitored. The alarm is
triggered by the temperature conditions described in this table.
Voltage Level System Condition
19.3…28.8V Normal
< 19.3V Alarm state 1 (internal variables are written)
< 15.4V Alarm state 2 (prepares for shutdown)
< 13.0V Switched off
Operating Temperature Alarm
< 60 °C (140 °F) None (normal)
60…70 °C (140…158 °F) Warning on
> 70 °C (158 °F) Main alarm on
Return to 64…54 °C (147.2…129.2 °F) Main alarm off, warning on
Return to < 54 °C (129.2 °F) None (return to normal)

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Status Indicators
Indicator State Description
24V DC On 24V DC operating voltage present.
Off No operating voltage.
RUN On This is the normal status of the controller.
A routine, which has been loaded into the controller, is executed.
The controller processes input and output signals, carries out communication, and
performs hardware and software tests.
Flashing The controller is in STOP mode and is not executing a routine.
All system outputs are reset.
STOP mode can be triggered by setting the Emergency stop system variable to TRUE
in the routine, or by direct command from the programming software.
Off The controller is in ERROR_STOP mode (see ERROR).
ERROR On •A hardware error has been detected by the controller. The controller goes to
ERROR_STOP mode and the execution of the routine is halted. Hardware errors
are errors in the controller, errors in one or more of the digital input and output
modules, or errors in the counters.
•A software error in the operating system has been detected by the controller.
•The watchdog has reported an error due to exceeded cycle time.
All system outputs will be reset and the controller ceases all hardware and software
tests. The controller can only be restarted by a command from the programming
software.
Off No errors are detected.
PROGress On The upload of a new controller configuration is in progress.
Flashing The upload of a new operating system into the nonvolatile ROM is in progress.
Off No upload of controller configuration or operating system in progress.
FORCE On The controller is executing a routine (RUN) and FORCE mode is activated by the user.
Flashing The controller is in STOP mode, but forcing has been initiated and will be activated
when the controller is started.
Off Forcing is OFF.
FAULT On •The routine (logic) has caused an error.
•The controller configuration is faulty.
•The upload of a new operating system was not successful and the operating
system is corrupted.
Flashing An error has occurred during a nonvolatile ROM write cycle.
One or more I/O errors have occurred.
Off None of the above errors has occurred.
OSL Flashing Emergency Operating System Loader is active.
BL Flashing Boot Loader unable to load operating system or unable to start COMM operating
system loader.
Controller status can be interrogated through the programming software. For more information, see the
GuardPLC Controller Systems User Manual, publication 1753-UM001.

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Communication via GuardPLC Ethernet protocol is indicated by two small status indicators
integrated into all connecting sockets.
Additional nonsafety-related communication occurs on the field buses and is indicated by these
status indicators.
Specifications
Indicator State Description
Green On Full-duplex operation
Flashing Collision
Off Half-duplex operation, no collision
Yellow On Connection established
Flashing Interface activity
Indicator Connection Description
Green COMM 1 RS-485 interface, field bus active
COMM 2 Unassigned
COMM 3 Unassigned
Technical Specifications – GuardPLC 1600 Controllers
Attribute 1753-L28BBB-M, 1753-L28BBB-P
User Memory 250 KB max user program memory
250 KB max application data memory
Watchdog, min 10 ms
Safety time, min 20 ms
Current consumption 8 A max (with max load)
0.5 A idle current
Operating voltage 24V DC, -15% to 20%, wss ≤15% (from a power supply with protective
separation conforming to IEC 61131-2 requirements)
Isolation voltage 50V (continuous), Basic Insulation Type, I/O to Ethernet and Ethernet to DC
power
Wiring category(1) Category 2 on communication ports, signal ports, and power ports
Wire size •I/O – 0.13…1.3 mm2(26…16 AWG) solid or stranded copper wire rated at
75 °C (167 °F) or greater with 1.2 mm (3/64 in.) insulation max
•Power – 0.33…2.1 mm2 (22…14 AWG) solid or stranded copper wire rated
at 75 °C (167 °F) or greater with 1.2 mm (3/64 in.) insulation max
•Ethernet – RJ45 connector according to IEC 60603-7, 2-pair or 4-pair
Category 5e minimum cable according to TIA 568-B.1, or Category 5 cable
according to ISO/IEC 24702
•Comm: 9-pin D-sub
Wire type Shielded on Ethernet
Terminal block torque 0.51 N•m (4.5 lb•in)

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Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Fuse (external) 24V DC power: 10 A (time-lag)
Enclosure type rating Meets IP20
Width, approx. 257 mm (10.1 in.)
Height, approx. 114 mm (4.49 in.) including latch
Depth, approx. 66 mm (2.60 in.) including grounding bolt
Weight 1.2 kg (2.64 lb)
Digital Inputs
Number of inputs 20 (not electrically isolated)
On-state Voltage: 15…30V DC
Current consumption: ≥ 2 mA @ 15V
7.5 mA @ 30V
Off-state Voltage: 5V DC max
Current consumption: 1.5 mA max (1 mA @ 5V)
Switching point typically 7.5V
Supply 5 x 20V / 100 mA @ 24V short-circuit proof
Digital Outputs
Number of outputs 8 (not electrically isolated)
Output voltage range 18.4…26.8V
Output current Channels 1…3 and 5…7: 0.5 A @ 60 °C (140 °F)
Channels 4 and 8: 1 A @ 60 °C (140 °F); 2 A @ 50 °C (122 °C)
Surge current per channel 1 A for 10ms @ 1Hz (Channels 1…3 and 5…7)
4 A for 10ms @ 1Hz (Channels 4 and 8)
Current load, min 2 mA per channel
On-state voltage drop 2.0V DC max @ 2 A
Off-state leakage current 1 mA max @ 2V
(1) Use this Conductor Category information for planning conductor routing. Refer to Industrial Automation Wiring and
Grounding Guidelines, publication 1770-4.1.
Technical Specifications – GuardPLC 1600 Controllers
Attribute 1753-L28BBB-M, 1753-L28BBB-P

19
Rockwell Automation Publication 1753-IN001C-EN-P - June 2010
Environmental Specifications – GuardPLC 1600 Controllers
Attribute 1753-L28BBB-M, 1753-L28BBB-P
Temperature, nonoperating
•IEC 60068-2-1 (Test Ab, Unpackaged
nonoperating cold)
•IEC 60068-2-2 (Test Bb, Unpackaged nonoperating
dry heat)
•IEC 60068-2-14 (Test Na, Unpackaged
nonoperating thermal shock)
-40…85 °C (-40…185 °F)
Temperature, operating
•IEC 60068-2-1 (Test Ad, operating cold)
•IEC 60068-2-2 (Test Bd, operating dry heat)
•IEC 60068-2-14 (Test Nb, operating thermal
shock)
0…60 °C (32…140 °F)
Temperature, surrounding air 60 °C (140 °F)
Vibration
•IEC 60068-2-6 (Test Fc, operating)
1 g @ 10…150 Hz
Shock, operating
•IEC 60068-2-27 (Test Ea, unpackaged shock)
15 g
Relative humidity
•IEC 60068-2-30 (Test Db, unpackaged damp heat)
10…95% noncondensing
Emissions CISPR 11: Group 1, Class A
ESD Immunity
•IEC 61000-4-2
•6 kV contact discharges
•8 kV air discharges
Radiated RF Immunity
•IEC 61000-4-3
•10V/m with 1kHz sine-wave 80% AM from 80
MHz…2000 MHz
•1 V/m with 1 kHz sine-wave 80% AM from
2000…2700 MHz
EFT/B Immunity
•IEC 61000-4-4
•±2 kV @ 5 kHz on DC power ports
•±1 kV @ 5 kHz on signal ports
•±1 kV @ 5 kHz on communication ports
Surge Transient Immunity
•IEC 61000-4-5
•±500V line-line (DM) and ±500V line-earth (CM) on
DC power ports
•±1 kV line-earth (CM) on signal ports
•±1 kV line-earth (CM) on communication ports
Conducted RF Immunity
•IEC 61000-4-6
10V rms with 1 kHz sine-wave 80% AM from 150
kHz…80 MHz
Damped Oscillatory Wave Immunity
•IEC 61000-4-12
•±1 kV line-earth (CM) on signal ports
•±1 kV line-earth (CM) on power ports

Rockwell Automation Publication 1753-IN001C-EN-P - June 2010 PN-77076
Supersedes Publication 1753-IN001B-EN-P - March 2004 Copyright © 2010 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A.
Allen-Bradley, Rockwell Software, Rockwell Automation, and GuardPLC are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Rockwell Otomasyon Ticaret A.Ş., Kar Plaza İş Merkezi E Blok Kat:6 34752 İçerenköy, İstanbul, Tel: [phone]
Additional Resources
The table below provides a listing of publications that contain important information about
GuardPLC systems.
You can view or download publications at http://www.rockwellautomation.com/literature. To
order paper copies of technical documentation, contact your local Rockwell Automation
distributor or sales representative.
Certifications
Certification (when
product is marked)(1)
(1) See the Product Certification link at http://www.ab.com for Declarations of Conformity, Certificates, and other certification
details.
1753-L28BBB-M, 1753-L28BBB-P
c-UL-us UL Listed Industrial Control Equipment, certified for US and Canada. See UL
File E65584.
CE European Union 2004/108/EC EMC Directive, compliant with:
•EN 61326-1 Meas./Control/Lab., Industrial Requirements
•EN 61000-6.2; Industrial Immunity
•EN 61000-6-4; Industrial Emissions
•EN 61131-2; Programmable Controllers (Clause 8, Zone A & B)
C-Tick Australian Radiocommunications Act, compliant with: AS/NZS CISPR 11;
Industrial Emissions
Functional Safety Certified by TÜV(2): up to and including SIL 3 according to IEC 61508 and PLe
(Cat. 4) according to ISO 13849-1
(2) When used with specified firmware revisions.
Resource Description
GuardPLC Controller Systems Safety Reference
Manual, publication 1753-RM002 Detailed information regarding the safety certification of the
GuardPLC System
GuardPLC Controller Systems User Manual,
publication 1753-UM001 Detailed information on installing, wiring, configuring,
operating, maintaining, and troubleshooting GuardPLC
systems
Using RSLogix Guard PLUS! Software with
GuardPLC Controllers Programming Manual,
publication 1753-PM001
Detailed information on programming your GuardPLC system
using RSLogix Guard PLUS! software
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1
General guidelines for installing a Rockwell Automation
industrial system