Bedrock OSA Remote Manual

Bedrock OSA® Remote
Hardware Installation Guide
for
Hazardous Locations
(Class I Division 2)

Contents
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 i
Contents
Disclaimer.........................................................................iii
Document Overview ........................................................... 1
Introduction.............................................................................................................1
Intended Use ............................................................................................................1
Support and Contact Information ........................................................................1
Hazardous Location Installation Information ....................... 2
Important User Information..................................................................................2
Environment and Enclosure ..................................................................................3
Entity Parameters ....................................................................................................4
System Calculations ................................................................................................5
Cable Information for Installation........................................ 6
Installation with the Bedrock Universal Cable....................................................6
Cabling for Serial and CAN Bus Connections....................................................7
Hazardous Location Information for Inputs and Outputs ...... 8
OSA Remote Pin Out Tables..................................................................................8
OSA Remote Wiring Diagrams and Entity Parameters ...................................11
Analog Input, Internal Power ...................................................................................11
Analog Input, External Power ..................................................................................12
Analog Output with Readback .................................................................................13
Discrete Input, Contact Closure................................................................................14
Discrete Input, Voltage Monitor................................................................................15
Discrete Output, Internal Excitation........................................................................16
Discrete Output, External Excitation.......................................................................17
NAMUR Sensor.........................................................................................................18
0-10 Volt Input ..........................................................................................................19
Ethernet Port Hazardous Location Information .................. 20
Overview ................................................................................................................20
Ethernet Port Entity Parameters .........................................................................20
Serial Port Hazardous Location Information ..................... 21
Serial Port Pin Out Table......................................................................................21
Serial Port Wiring Diagrams and Entity Parameters........................................22

Contents
ii Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
CAN Bus Port Hazardous Location Information ................ 23
CAN Bus Port Pin Out Table...............................................................................23
CAN Bus Port Wiring Diagrams and Entity Parameters.................................24
Equipment Location Information...........................................A-1
Certifications and Standards..................................................B-1
Certifications ...........................................................................................................1
CE Testing ....................................................................................................................1
Underwriters Laboratories (UL) Safety Compliance.................................................1
IEC Environmental Testing.........................................................................................2
EIA Publication 364 ....................................................................................................2
FCC Testing .................................................................................................................3
Standards ..................................................................................................................3
IEC 61131 ....................................................................................................................3
Acronyms.................................................................................C-1

6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 iii
Disclaimer
Equipment, Diagrams, Hardware, and Software
Solid state equipment has operational characteristics differing from those of electromechanical equipment. Since there are a 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 Bedrock Automation 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, Bedrock Automation cannot assume responsibility or liability for actual use based on the
examples and diagrams.
No patent liability is assumed by Bedrock Automation with respect to use of information, circuits, equipment, or software described in
this manual.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
No Warranties
This manual is provided “as is” without any representations or warranties, express or implied. Bedrock Automation makes no
representations or warranties in relation to this manual or the information and materials provided herein. Although we make a reasonable
effort to include accurate and up to date information, without prejudice to the generality of this paragraph, Bedrock Automation does
not warrant that:
•The information in this manual is complete, true, accurate or non-misleading.
The Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations is provided solely for informational purposes. You
should not act upon this information without consulting Bedrock Automation.
Subject to Change
The Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations is subject to change without notice.
Exceptions
Nothing in this disclaimer will exclude or limit any warranty implied by law that it would be unlawful to exclude or limit; and nothing in
this disclaimer will exclude or limit Bedrock Automation’s liability in respect of any:
• death or personal injury caused by Bedrock Automation’s negligence;
• fraud or fraudulent misrepresentation on the part of Bedrock Automation; or
• matter which it would be illegal or unlawful for
Bedrock Automation to exclude or limit, or to attempt or purport to exclude or
limit, its liability.
Reasonableness
By using this manual, you agree that the exclusions and limitations of liability set out in this disclaimer are reasonable. If you do not
think they are reasonable, you must not use this manual.
Other Parties
You accept that Bedrock Automation has an interest in limiting the personal liability of its officers and employees. You agree that you
will not bring any claim personally against Bedrock Automation’s officers or employees in respect of any losses you suffer in connection
with the manual.
Unenforceable Provisions
If any provision of this disclaimer is, or is found to be, unenforceable under applicable law, that will not affect the enforceability of the
other provisions of this disclaimer.
Manual Reproduction
Reproduction of the contents of this manual, in whole or in part, without written permission of Bedrock Automation, is prohibited.

Chapter 1
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 1
Document Overview
Introduction This document provides information needed for the installation of a Bedrock
OSA Remote as nonincendive or associated nonincendive field wiring apparatus
in hazardous or nonhazardous locations with connections to equipment in Class I
Division 2, Groups A, B, C, and D hazardous locations.
Intended Use The information in this document is supplemental to the installation procedures
in the Bedrock Secure OSA Remote User Manual.
This manual should only be used if you are responsible for installing Bedrock
OSA Remotes as nonincendive field wiring apparatus (inputs) or associated
nonincendive field wiring apparatus (outputs) connected to equipment in Class I
Division 2, Groups A, B, C, and D Hazardous Locations.
Installation of Bedrock OSA Remotes as nonincendive field wiring apparatus
should only be performed by qualified personal familiar with NEC articles 501
through 505.
See Appendix B, “Certifications and Standards” for applicable standards
documents.
Support and Contact
Information
Contact information for Bedrock Automation Field Support is:
[phone]
[email protected]
https://www.bedrockautomation.com/support/

Chapter 2
2 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Hazardous Location Installation
Information
This chapter describes the entity parameters to be used in determining the
maximum cable length allowed for connecting a Bedrock OSA Remote in
unclassified or classified locations to equipment in Class I Division 2, Groups A,
B, C, and D hazardous locations.
Important User
Information
WARNING
EXPLOSION HAZARD - DO NOT CONNECT OR DISCONNECT THE OSA REMOTE
POWER CABLE WHILE THE OSA REMOTE IS ENERGIZED.
WARNING
DO NOT INSERT OR REMOVE THE SFP INTERFACE MODULE WHILE THE OSA
REMOTE IS ENERGIZED.
Important
Note the following with regard to installation of the Bedrock OSA Remote in
hazardous locations:
THE EQUIPMENT IS AN OPEN-TYPE DEVICE MEANT TO BE INSTALLED IN
AN ENCLOSURE SUITABLE FOR THE ENVIRONMENT AND THAT IS ONLY
ACCESSIBLE WITH THE USE OF A TOOL.
THE EQUIPMENT IS SUITABLE FOR USE IN CLASS I, DIVISION 2, GROUPS A,
B, C, AND D HAZARDOUS LOCATIONS, OR NONHAZARDOUS LOCATIONS
ONLY.

Hazardous Location Installation Information Chapter 2
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 3
Environment and
Enclosure
Important
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in over-voltage Category II application (as defined in
IEC 60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is supplied as an open-type equipment. It must be mounted
with 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 interior of the enclosure
must be accessible only by the use of a tool.
Subsequent sections of this publication may contain information regarding
specific enclosure type ratings that are required to comply with certain product
safety certifications
In addition to this publication, see the following: NEMA Standard 250 and
IEC 60529, as application for explanation of the degrees of protection provided
by enclosure.
The following information applies when operating the equipment in hazardous
locations:
Products marked “CL I, DIV 2, GP A, B, C, D” are suitable for use in Hazardous
Locations and nonhazardous locations only. Each product is supplied with
markings on the rating nameplate indicating the hazardous location
temperature code. When combining products within a system, the most
adverse temperature code (lowest “T” number) may be used to help determine
the overall temperature code of the system. Combinations of equipment in
your system are subject to investigation by the local Authority Having
Jurisdiction at the time of installation.
A temperature code of T4 has been established for the Bedrock OSA Remote.
The Bedrock OSA Remote can operate in an ambient temperature range of -40°C
to 80°C.

Chapter 2 Hazardous Location Installation Information
4 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Entity Parameters Electrical parameters for the entity concept are listed for the Bedrock OSA
Remote in the following chapters. As applicable, parameters are listed for
different modes of operation. If an OSA Remote is configured for both inputs
and outputs, use the longest calculated cable length.
Table 2-1 shows the set of entity parameters that are listed for OSA Remote
channels that are configured as an outputs.
Table 2-2 shows the set of entity parameters that are listed for OSA Remote
channels that are configured as an inputs.
Table 2-1 Entity Parameters for OSA Remote Outputs
Parameter Description
Voc Maximum output voltage
Isc Maximum output current
CaMaximum external capacitance
LaMaximum external inductance
Table 2-2 Entity Parameters for OSA Remote Inputs
Parameter Description
Vmax Maximum input voltage
Imax Maximum input current
CiMaximum internal capacitance
LiMaximum internal inductance

Hazardous Location Installation Information Chapter 2
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 5
System Calculations Capacitance and inductance of the field wiring from nonincendive field wiring
apparatus to the associated apparatus shall be calculated and must be included in
the system calculations. Cable capacitance (Ccable) plus nonincendive equipment
capacitance (Ci) must not exceed the capacitance specified for the associated
apparatus (Ca). The same applies for inductance (use Lcable, Li, and La,
respectively). These conditions are summarized below:
•V
max > Voc
•I
max > Isc
•C
a> Ci + Ccable
•L
a> Li + Lcable
When the cable capacitance and inductance per foot are not known, the
following values shall be used:
•C
cable = 60 pF/ft.
•L
cable = 0.2 μH/ft.

Chapter 3
6 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Cable Information for Installation
Installation with the
Bedrock Universal
Cable
The OSA Remote is connected to field devices via the Bedrock Universal Cable.
Thumb screws located on the cable assembly secure the assembly to the OSA
Remote twenty pin IO connectors. Connect the assembly to the OSA Remote as
shown in Figure 3-1.
Figure 3-1 Bedrock Universal Cable Connected to OSA Remote

Cable Information for Installation Chapter 3
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 7
The wiring diagram and pin outs for the universal cable and OSA Remote is
shown in Figure 3-2. Pin out functions for the OSA Remote IO connections
are shown in the pin out table in the “Hazardous Location Information for
Inputs and Outputs” chapter.
Figure 3-2 Universal Cable Pin Out Diagram
Cabling for Serial and
CAN Bus Connections
The Bedrock Universal Serial Communication Cable is available for connecting
the OSA Remote to other devices via the serial or CAN bus ports.
One end of the serial cable connects to the serial or CAN bus Micro-D
connector on the OSA Remote while the other end of the cable has a 9-pin
female D-Sub connector (the same as can be found on a standard PC) for
connection to field devices. See “Serial Port Hazardous Location Information”
for pin out information for the supported serial communication standards.
PIN 1
PIN 2
PIN 3
PIN 4
PIN 5
PIN 6
PIN 7
PIN 8
PIN 9
PIN 10
PIN 11
PIN 12
PIN 13
PIN 14
PIN 15
PIN 16
PIN 17
PIN 18
PIN 19
PIN 20
WIRING DIAGRAM FOR I/O
CONNECTIONS
PAIR 1
PIN 1
PIN 2
PAIR 2
PIN 3
PIN 4
PAIR 3
PIN 5
PIN 6
PAIR 4
PIN 7
PIN 8
PAIR 5
PIN 9
PIN 10
PAIR 6
PIN 11
PIN 12
PAIR 7
PIN 13
PIN 14
PAIR 8
PIN 15
PIN 16
PAIR 9
PIN 17
PIN 18
PAIR 10
PIN 19
PIN 20
DRAIN WIRE

Chapter 4
8 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Hazardous Location Information for
Inputs and Outputs
This chapter provides information that is required for connecting an OSA
Remote to analog and discrete IO field devices that reside in a Class I Division 2
hazardous location. Connection to the field devices use the Bedrock Universal
Cable. This information is supplementary to the OSA Remote IO Connection
information found in the Bedrock Secure OSA Remote User Manual.
The information in this chapter includes pin out tables, wiring diagrams, and
entity parameters.
OSA Remote Pin Out
Tables
Pin out information for OSA Remote IO connectors is shown in Table 4-1
through Table 4-4. See Figure 3-2 for corresponding pin out information for the
Bedrock Universal Cable.
Table 4-1 OSA Remote Pin Outs for Channels 1-5
Pair No. Pin No. Function
PAIR 1 1 CHAN. 1 EXCITATION
2 CHAN. 1 ANALOG
PAIR 2 3 CHAN. 1 RETURN
4 CHAN. 1 DISCRETE
PAIR 3 5 CHAN. 2 EXCITATION
6 CHAN. 2 ANALOG
PAIR 4 7 CHAN. 2 RETURN
8 CHAN. 2 DISCRETE
PAIR 5 9 CHAN. 3 EXCITATION
10 CHAN. 3 ANALOG
PAIR 6 11 CHAN. 3 RETURN
12 CHAN. 3 DISCRETE
PAIR 7 13 CHAN. 4 EXCITATION
14 CHAN. 4 ANALOG
PAIR 8 15 CHAN. 4 RETURN
16 CHAN. 4 DISCRETE
PAIR 9 17 CHAN. 5 EXCITATION
18 CHAN. 5 ANALOG
PAIR 10 19 CHAN. 5 RETURN
20 CHAN. 5 DISCRETE

Hazardous Location Information for Inputs and Outputs Chapter 4
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 9
Table 4-2 OSA Remote Pin Outs for Channels 6-10
Pair No. Pin No. Function
PAIR 1 1 CHAN. 6 EXCITATION
2 CHAN. 6 ANALOG
PAIR 2 3 CHAN. 6 RETURN
4 CHAN. 6 DISCRETE
PAIR 3 5 CHAN. 7 EXCITATION
6 CHAN. 7 ANALOG
PAIR 4 7 CHAN. 7 RETURN
8 CHAN. 7 DISCRETE
PAIR 5 9 CHAN. 8 EXCITATION
10 CHAN. 8 ANALOG
PAIR 6 11 CHAN. 8 RETURN
12 CHAN. 8 DISCRETE
PAIR 7 13 CHAN. 9 EXCITATION
14 CHAN. 9 ANALOG
PAIR 8 15 CHAN. 9 RETURN
16 CHAN. 9 DISCRETE
PAIR 9 17 CHAN. 10 EXCITATION
18 CHAN. 10 ANALOG
PAIR 10 19 CHAN. 10 RETURN
20 CHAN. 10 DISCRETE
Table 4-3 OSA Remote Pin Outs for Channels 11-15
Pair No. Pin No. Function
PAIR 1 1 CHAN. 11 EXCITATION
2 CHAN. 11 ANALOG
PAIR 2 3 CHAN. 11 RETURN
4 CHAN. 11 DISCRETE
PAIR 3 5 CHAN. 12 EXCITATION
6 CHAN. 12 ANALOG
PAIR 4 7 CHAN. 12 RETURN
8 CHAN. 12 DISCRETE
PAIR 5 9 CHAN. 13 EXCITATION
10 CHAN. 13 ANALOG
PAIR 6 11 CHAN. 13 RETURN
12 CHAN. 13 DISCRETE
PAIR 7 13 CHAN. 14 EXCITATION
14 CHAN. 14 ANALOG

Chapter 4 Hazardous Location Information for Inputs and Outputs
10 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
PAIR 8 15 CHAN. 14 RETURN
16 CHAN. 14 DISCRETE
PAIR 9 17 CHAN. 15 EXCITATION
18 CHAN. 15 ANALOG
PAIR 10 19 CHAN. 15 RETURN
20 CHAN. 15 DISCRETE
Table 4-4 OSA Remote Pin Outs for Channels 16-20
Pair No. Pin No. Function
PAIR 1 1 CHAN. 16 EXCITATION
2 CHAN. 16 ANALOG
PAIR 2 3 CHAN. 16 RETURN
4 CHAN. 16 DISCRETE
PAIR 3 5 CHAN. 17 EXCITATION
6 CHAN. 17 ANALOG
PAIR 4 7 CHAN. 17 RETURN
8 CHAN. 17 DISCRETE
PAIR 5 9 CHAN. 18 EXCITATION
10 CHAN. 18 ANALOG
PAIR 6 11 CHAN. 18 RETURN
12 CHAN. 18 DISCRETE
PAIR 7 13 CHAN. 19 EXCITATION
14 CHAN. 19 ANALOG
PAIR 8 15 CHAN. 19 RETURN
16 CHAN. 19 DISCRETE
PAIR 9 17 CHAN. 20 EXCITATION
18 CHAN. 20 ANALOG
PAIR 10 19 CHAN. 20 RETURN
20 CHAN. 20 DISCRETE
Table 4-3 OSA Remote Pin Outs for Channels 11-15
Pair No. Pin No. Function

Hazardous Location Information for Inputs and Outputs Chapter 4
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 11
OSA Remote Wiring
Diagrams and Entity
Parameters
Analog Input, Internal
Power
Figure 4-1 shows the diagram for wiring an OSA Remote using 4-20 mA analog
input with internal loop power.
Figure 4-1 OSA Remote: 4-20 mA with Internal Loop Power
Table 4-5 shows entity parameters for when the OSA Remote is wired using
4-20 mA analog input with internal loop power.
}
CH. 1, 6, 11, 16
}
CH. 2, 7, 12, 17
}
CH. 3, 8, 13, 18
}
CH. 4, 9, 14, 19
}
CH. 5, 10, 15, 20
T
LOOP POWERED
TRANSMITTER
Nonhazardous Location or
Hazardous (Classified) Location
Class I, Division 2, Groups A, B, C, and D
Hazardous (Classified)
Location
Class I, Division 2,
Groups A, B, C, and D
Table 4-5 OSA Remote Entity Parameters (Analog Input, Internal Loop Power)
Parameter Value Description
Voc 26 V Maximum output voltage
Isc 35 mA Maximum output current
Ca0.350 µF Maximum external capacitance
La65,300 µH Maximum external inductance

Chapter 4 Hazardous Location Information for Inputs and Outputs
12 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Analog Input, External
Power
Figure 4-2 shows the diagram for wiring an OSA Remote using 4-20 mA analog
input with external loop power.
Figure 4-2 OSA Remote: 4-20 mA with External Loop Power
Table 4-6 shows entity parameters for when the OSA Remote is wired using
4-20 mA analog input with external loop power.
}
CH. 1, 6, 11, 16
}
CH. 2, 7, 12, 17
}
CH. 3, 8, 13, 18
}
CH. 4, 9, 14, 19
}
CH. 5, 10, 15, 20
T
LOOP POWERED
TRANSMITTER
+
-
POWER
SUPPLY
Hazardous (Classified)
Location
Class I, Division 2,
Groups A, B, C, and D
Nonhazardous Location or
Hazardous (Classified) Location
Class I, Division 2, Groups A, B, C, and D
Table 4-6 OSA Remote Entity Parameters (Analog Input, External Loop Power)
Parameter Value Description
Vmax 10 V Maximum voltage connected to the module
Imax 35 mA Maximum input current
Ci0 µF Maximum internal capacitance
Li0 µH Maximum internal inductance

Hazardous Location Information for Inputs and Outputs Chapter 4
6/28/19 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 13
Analog Output with
Readback
Figure 4-3 shows the diagram for wiring an OSA Remote using analog output
with readback.
Figure 4-3 OSA Remote: Analog Output with Readback
Table 4-7 shows entity parameters for when the OSA Remote is wired using
analog output with readback.
}
CH. 1, 6, 11, 16
}
CH. 2, 7, 12, 17
}
CH. 3, 8, 13, 18
}
CH. 4, 9, 14, 19
}
CH. 5, 10, 15, 20
LOAD
Hazardous (Classified)
Location
Class I, Division 2,
Groups A, B, C, and D
Nonhazardous Location or
Hazardous (Classified) Location
Class I, Division 2, Groups A, B, C, and D
Table 4-7 OSA Remote Entity Parameters (Analog Output with Readback)
Parameter Value Description
Voc 26 V Maximum output voltage
Isc 35 mA Maximum output current
Ca0.350 µF Maximum external capacitance
La65,300 µH Maximum external inductance

Chapter 4 Hazardous Location Information for Inputs and Outputs
14 Bedrock OSA Remote Hardware Installation Guide for Hazardous Locations - BRDOC025_001 6/28/19
Discrete Input, Contact
Closure
Figure 4-4 shows the diagram for wiring an OSA Remote using discrete input
with contact closure.
Figure 4-4 OSA Remote: Discrete Input with Contact Closure
Table 4-8 shows entity parameters for when the OSA Remote is wired using
discrete input with contact closure.
}
CH. 1, 6, 11, 16
}
CH. 2, 7, 12, 17
}
CH. 3, 8, 13, 18
}
CH. 4, 9, 14, 19
}
CH. 5, 10, 15, 20
Hazardous (Classified)
Location
Class I, Division 2,
Groups A, B, C, and D
Nonhazardous Location or
Hazardous (Classified) Location
Class I, Division 2, Groups A, B, C, and D
Table 4-8 OSA Remote Entity Parameters (Discrete Input with Contact Closure)
Parameter Value Description
Voc 26 V Maximum output voltage
Isc 3 mA Maximum output current
Ca0.350 µF Maximum external capacitance
La71,600 µH Maximum external inductance