Emerson Fisher easy-Drive RPU-100 User manual

www.Fisher.com
Fisher™easy-Drive™RPU-100
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 1.................................
Educational Services 2.........................
Related Documents 2..........................
Product Operation 3............................
Product Interfaces 3............................
Enable / Disable Switch 3.......................
LED Key 4....................................
easy-Drive User Interface 5.......................
Loss Detect 5.................................
Status Output 5...............................
Installation 6..................................
Product Security 6.............................
Mounting 7..................................
Wiring 10....................................
Replacement 15................................
Removal 15..................................
Installation 15................................
Parts Ordering 15...............................
Appendix A - Modbus 16.........................
Appendix B - Certificate of Conformance 20.........
Figure 1. Fisher easy-Drive RPU-100
X1718
Introduction
Scope of Manual
This instruction manual provides product information including installation for the Fisher easy-Drive
RPU-100. For Fisher easy-Drive actuators refer to the appropriate easy-Drive actuator instruction
manual. To avoid personal injury or property damage, it is important to carefully read, understand, and
follow all the contents of this manual, including all safety cautions and warnings. If you have any
questions about these instructions, contact your Emerson sales office before proceeding.
Description
The easy-Drive RPU-100 is a reserve power unit designed to provide backup power to the easy-Drive actuator upon
loss of incoming power. The RPU-100 provides enough power to the actuator to allow the actuator to drive the valve
to the pre-defined loss of power or loss of signal position. The RPU-100 can be ordered with a new easy-Drive assembly
or be retrofit into existing easy-Drive units that have the Gen2 control board.
Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
2
Table 1. Specifications
Material Temperature Capabilities
-20°C (-4°F) to 70°C (158°F)
Power Requirements
11-30 VDC, minimum 4 amp power supply required
(fuse to 5 amps)
Maximum Current Draw
4 amps
Idle Current Draw
30 mA at 24 VDC, 50 mA at 12 VDC
Hazardous Area Approvals
CSA (C/US): ExplosionProof Class I, Division 1,
Groups C and D, T6, Ex db IIA T6, Class I, Zone 1, AEx
db IIA T6
ATEX Flameproof - Gas:
II 2 G, Ex db IIA T6 Gb
IECEx Flameproof - Gas: Ex db IIA T6 Gb
Approximate Weight:
0.5 kg (1 lb)
Educational Services
For information on available courses for the easy-Drive RPU-100, as well as a variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [email protected]
emerson.com/fishervalvetraining
Related Documents
This section lists other documents containing information related to the easy-Drive RPU-100. These documents
include:
D Fisher easy-Drive 200L Instruction Manual (D104331X012)
D Fisher D3 Valve with Gen 2 easy-Drive Actuator Instruction Manual (D104161X012)
D Fisher D4 Valve with Gen 2 easy-Drive Actuator Instruction Manual (D104188X012)

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
3
Product Operation
The easy-Drive RPU-100 will begin charging once valid power (>= 11VDC) is received. Once the RPU-100 is charged, it
will pass power through to the easy-Drive actuator. Upon loss of power the RPU-100 will interrupt the control signals
commanding the actuator to move to the defined loss of power/signal position. The RPU-100 will provide power to
the actuator for 120 seconds to ensure enough time to complete move and then power down.
The easy-Drive RPU-100 will determine when it is sufficiently charged. Charge time will depend on the application
and/or power used to perform a back up. A minimum charge time is enforced.
Product Interfaces
Enable / Disable Switch
The switch enables or disables the functionality of the RPU. When the switch is in the “disable” position the RPU-100
will continue to pass line power through to the actuator and charge but will not provide backup capability upon loss of
power.
Figure 2. Fisher easy-Drive RPU-100 Switch
X1726
SWITCH

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
4
LED Key
Figure 3. States of the Fisher easy-Drive RPU-100
Power
(Green)
Status
(Blue)
Attention
(Yellow)
Fault
(Red)
Normal Operation
Charging
Providing Power
Disabled
Recoverable Fault
Non-Recoverable Fault
INDICATES FLASHING LIGHT INDICATES SOLID LIGHT

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
5
easy-Drive User Interface
The easy-Drive configurator is available on the Emerson easy-Drive product website or Fisher.com.
Figure 4. Fisher easy-Drive Configuration Software
Loss Detect
The loss detect is a user defined time the RPU-100 will wait to verify loss of power before performing a backup
operation. This time is configurable between 0.05 and 3.00 seconds. The default is 0.250 seconds.
Status Output
The status output is a discrete output that indicates the overall status of the RPU-100. If the output is on, (connection
made) this indicates the RPU-100 is operational. If the output is off, additional information can be found in the Modbus
diagnostic fault flags register.
See the Mounting section of this manual for wiring details.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
6
Installation
WARNING
Avoid personal injury from sudden release of process pressure or bursting of parts. Before performing any maintenance
operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Back plug away from seat to relieve spring compression.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve. If an RPU-100 is already installed, move the switch to the disable
position to prevent movement of the valve by the RPU-100.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
WARNING
D For explosionproof applications, ensure the actuator cover is properly bolted before applying power to the actuator.
Personal injury or property damage may result from fire or explosion if power is applied to the actuator with the cover
removed in a hazardous area.
D For explosion‐proof applications, install rigid metal conduit and a conduit seal no more than 457 mm (18 in) from the
actuator. Personal injury or property damage may result from explosion if the seal is not installed.
D Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection,
and temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property
damage from fire or explosion.
D Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area
approval. Failure to follow the local, regional, and national codes could result in personal injury or property damage
from fire or explosion.
D To avoid exposure hazard or release of toxic gases, DO NOT disassemble, subject to heat above 1005C (2125F), or
incinerate the RPU-100.
Note
End user must ensure a power supply voltage of 11-30VDC after retrofitting an easy-Drive electric actuator with the RPU-100 to
maintain the actuator's CSA hazardous area approval.
Product Security
It is the end-user's responsibility to provide a secure facility with limits to operating equipment.
Facility cyber security practices should include keeping the Fisher easy-Drive Configurator up to date.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
7
Mounting
The RPU-100 is mounted using the motor/gearbox bolts and the provided mounting bracket.
Figure 5. Fisher easy-Drive RPU-100 Mounting
GE95898_A
MOUNTING SCREWS MOUNTING BRACKET
WIRING HARNESS
1. Loosen all four motor housing bolts, removing the three bolts as shown below.
2. Position the bracket on the motor/gearbox.
X1723
Figure 6.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
8
3. Use the motor housing bolts removed in step one to secure the mounting bracket in place. Note the washers will
not be used with the bolts with the mounting bracket.
X1720
Figure 7.
4. Tighten all 4 motor bolts to 15 ft•lbs (20 N•m) using a criss-cross pattern while tightening the bolts.
5. The RPU-100 will sit down on the mounting bracket then slide toward the motor to lock into place.
X1725
LOCKS IN PLACE
Figure 8.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
9
6. Once the RPU-100 is locked in place install the two mounting screws to finish securing the unit.
X1721 X1724
Figure 9.
7. Use the provided wiring harness to connect the RPU-100 to the easy-Drive control board. Tighten all terminals to
ensure solid mechanical connection. Ensure the red wire is connected to the 12/24 VDC + Power.
8. After wiring connections have been completed, install easy-Drive actuator upper enclosure per the applicable
actuator instruction manual.
9. Use the easy-Drive configurator to configure the RPU-100 after installation.
X1722
RED WIRE TO 12/24 VDC+POWER
Figure 10.
X1810
FRONT VIEW REAR VIEW

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
10
Wiring
Power Requirements
Ensure a stable DC power source is available, maintaining less than 5% ripple and sufficiently surge protected for the
application. A 4 amp (minimum) power supply is required.
Wiring Instructions
1. Ensure power is turned off before connecting the wires.
2. Observe local wiring requirements for hazardous location usage.
3. Conduit seals within 450 mm (18 inches) of the enclosure port are required.
4. 18 AWG (0.52mm2) to 12 AWG (3.31mm2) wire size required.
5. Fuse system to 5A.
6. Connect enclosure and analog signal shields.
7. Be sure to tighten terminals sufficiently to ensure solid mechanical connection.
Figure 11. Wiring - RPU-100 Front View

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
11
Power
1. Connect 12 or 24 VDC reference to: –
2. Connect 12 or 24 VDC positive to: +
Figure 12. Wiring - RPU-100 Input

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
12
Figure 13. Wiring - Analog Input
Figure 14. Wiring - Dual Dry Contact

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
13
Figure 15. Wiring - Modbus Input
MODBUS A (T+)
MODBUS B (T-)
Figure 16. Wiring - Auxiliary Digital I/O

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
14
Figure 17. Wiring - Auxiliary Digital I/O
10 V, 25
mA max
Figure 18. Wiring - RPU-100 Status Switch
DISCRETE DEVICE
SELF-POWERED
DISCRETE DEVICE
EXTERNALLY POWERED

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
15
Replacement
WARNING
D Refer to the WARNINGS at the beginning of the Installation section in this instruction manual.
D To avoid exposure hazard or release of toxic gases, do not disassemble, subject to heat above 1005C (2125F), or
incinerate the RPU-100.
Note
Proper disposal of used reserve power unit, which contains acetonitrile, is required. Disposal should be done in accordance with
applicable federal, state, and local rules and regulations.
Removal
Refer to figures 5 through 10.
1. Remove the easy-Drive actuator upper enclosure per the applicable actuator instruction manual.
2. Disable RPU-100 by moving switch on reserve power unit to 'disable' position.
3. Disconnect power from the RPU-100.
4. Disconnect wiring harness from the RPU-100.
5. Remove the two mounting screws securing the RPU-100 to the actuator.
6. Slide RPU-100 to remove from mounting bracket.
Installation
Refer to Mounting section, steps 5 through 9, for installation of new RPU-100 reserve power unit. The existing wiring
harness can be used to connect to the new RPU-100.
Parts Ordering
The RPU-100 can be ordered as a part to be installed into existing easy-Drive electric actuators. Contact your Emerson
sales office for assistance or when ordering replacement parts.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson should not, under any
circumstances, be used in any Fisher actuator, because they may void your warranty, might adversely affect the
performance of the actuator, and could cause personal injury and property damage.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
16
Appendix A - Modbus
A.1 Register Summary
Table 2. easy-Drive RPU-100 Modbus Map
Type Name MB Register Default R/W Values Notes
uint16 RESERVED 44001
uint16 RESERVED 44002
uint16 RESERVED 44003
uint16 RESERVED 44004
uint16 RESERVED 44005
uint16 RESERVED 44006
uint16 RESERVED 44007
uint16 RESERVED 44008
uint16 Clear Diagnostic Flags 44009 0 R/W 0 - 1
Value of 1 will clear diagnostic flags register. This
register will automatically return to 0 after flags are
cleared.
uint16 Diagnostic Flags 44010 0 R 0 - 65535 Bit flags - see chart
uint16 Digital Output Status 44011 0 R 0 - 1 0=no connection between terminals, 1=connection
between terminals (Status of digital input or output)
uint32 Total Running Time 44012, 44013 0 R 0 - 4,294,967,295 Total number of minutes the RPU has been powered
on since time has been reset.
uint32 Number of Power Cycles 44014, 44015 0 R 0 - 4,294,967,295
Total number of times since reset the RPU has
dropped below the power loss threshold and
recovered.
uint32 Number of Backup Operations 44016, 44017 0 R 0 - 4,294,967,295 Total number of backup operations the RPU has
performed since reset.
uint16 Line Voltage 44018 0 R 0-3500 Value of incoming voltage with 2 implied decimal.
(0.00 - 35.00 V)
uint16 RESERVED 44019
uint16 RESERVED 44020
uint16 RESERVED 44021
uint16 RESERVED 44022
uint16 RESERVED 44023
uint16 RESERVED 44024
uint16 RESERVED 44025
uint16 RESERVED 44026
uint16 RESERVED 44027
uint16 RESERVED 44028
uint16 RESERVED 44029
uint16 RESERVED 44030
uint16 RESERVED 44031
uint16 RESERVED 44032
uint16 RESERVED 44033
uint16 RESERVED 44034
uint16 RESERVED 44035
uint16 RESERVED 44036
uint16 Test Register - 16 bit 44037 45964 R 45964 Fixed register to test correct reading of 16 bit
registers - Hex=B38C, Binary=1011001110001100
uint32 Test Register - 32 bit 44038, 44039 3,012,341,331 R 3,012,341,331
Fixed register to test correct reading of 32 bit
registers - Hex=B38C AE53,
Binary=1011001110001100 1010111001010011
uint16 RESERVED 44040
-continued-

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
17
Table 2. easy-Drive RPU-100 Modbus Map (cont.)
Type Name MB Register Default R/W Values Notes
uint16 Loss of Power Detection
Timeout 44041 250 R/W 50 - 3000
The amount of time that power is lost before the
RPU makes the decision power is truly lost and takes
action. Time is in milliseconds.
uint16 RESERVED 44042
uint16 RESERVED 44043
uint16 RESERVED 44044
uint16 RESERVED 44045
uint16 RESERVED 44046
uint16 RESERVED 44047
uint16 RESERVED 44048
uint16 RESERVED 44049
uint16 RESERVED 44050
uint16 RESERVED 44051
uint16 RESERVED 44052
uint16 RESERVED 44053
uint16 RESERVED 44054
uint16 RESERVED 44055
uint16 RESERVED 44056
uint16 RESERVED 44057
uint16 RESERVED 44058
uint16 RESERVED 44059
uint16 RESERVED 44060
uint16 RESERVED 44061
uint16 RESERVED 44062
uint16 RESERVED 44063
uint16 RESERVED 44064
uint16 RESERVED 44065
uint16 RESERVED 44066
uint16 RESERVED 44067
uint16 RESERVED 44068
uint16 RESERVED 44069
uint16 RESERVED 44070
uint16 Modbus address 44071 1 R/W 1-247 Slave address of the actuator
uint16 Baud Rate 44072 5 R/W 4 - 7 4=4800 baud, 5=9600 baud, 6=19200 baud,
7=38400 baud
uint16 Parity 44073 0 R/W 0 - 2 0=Even, 1=Odd, 2=None
uint16 Modbus stop bits 44074 1 R/W 1 - 2 1 will be the standard with even and odd parity while
2 is the standard for none.
uint16 MSB/LSB 44075 0 R/W 0 - 1 0=MSB, 1=LSB
uint16 RESERVED 44076
uc10 Device Tag 44077 - 44096 "Default Tag
Name" R/W 0 - 255 per character Device Tag (40 byte UTF8 string)
uint16 RESERVED 44097
uint16 RESERVED 44098
uint16 RESERVED 44099
uint16 RESERVED 44100
uint16 RESERVED 44101
uint16 RESERVED 44102
uint16 RESERVED 44103
uint16 RESERVED 44104
uint16 RESERVED 44105
-continued-

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
18
Table 2. easy-Drive RPU-100 Modbus Map (cont.)
Type Name MB Register Default R/W Values Notes
uint16 RESERVED 44106
uint16 RESERVED 44107
uint16 RESERVED 44108
uint16 RESERVED 44109
uint16 RESERVED 44110
uint32 PCB serial number 44111, 44112 0 R/W* 0 - 4,294,967,295 PCB serial number
uint32 PCB revision 44113, 44114 0 R/W* 0 - 4,294,967,295 PCB revision
uint16 Flash Firmware major revision 44115 0 R 0 - 65535 From flash firmware when compiled
uint16 Flash Firmware minor revision 44116 0 R 0 - 65535 From flash firmware when compiled
uint16 Flash Firmware mod revision 44117 0 R 0 - 65535 From flash firmware when compiled
uint16 Flash Firmware build revision 44118 0 R 0 - 65535 From flash firmware when compiled
uint16 Boot Firmware major revision 44119 0 R 0 - 65535 From boot firmware when compiled
uint16 Boot Firmware minor revision 44120 0 R 0 - 65535 From boot firmware when compiled
uint16 Boot Firmware mod revision 44121 0 R 0 - 65535 From boot firmware when compiled
uint16 Boot Firmware build revision 44122 0 R 0 - 65535 From boot firmware when compiled
uint32 PCB test date 44123, 44124 0 R/W* 0 - 4,294,967,295 Seconds since January 1, 2000,
Board Supplier Functional Test Date
uint32 System completion date 44125, 44126 0 R/W* 0 - 4,294,967,295 Seconds since January 1, 2000,
Final Assembly Test Date
uint16 RESERVED 44127
uint16 RESERVED 44128
uint16 RESERVED 44129
uint16 RESERVED 44130
uint16 RESERVED 44131
uint16 RESERVED 44132
uint16 RESERVED 44133
uint16 RESERVED 44134
uint16 RESERVED 44135
uint16 RESERVED 44136
uint16 RESERVED 44137
uint16 RESERVED 44138
uint16 RESERVED 44139
uint16 RESERVED 44140
uint16 RESERVED 44141
uint16 RESERVED 44142
uint16 RESERVED 44143
uint16 RESERVED 44144
uint16 RESERVED 44145
uint16 RESERVED 44146
uint16 RESERVED 44147
uint16 Reset to factory defaults 44148 0 R/W 0 - 1 Value of 1 will reset all setup registers to factory
defaults. Will automatically set back to 0.
uint16 Reset statistics 44149 0 R/W 0 - 1 Value of 1 will clear all statistic registers (44011 -
44017). Will automatically set back to 0.
1. uint is defined as Unsigned Integer
uint16 – unsigned 16 bit variable, can take value 0-65535.
uint32 – unsigned 32 bit variable, can take value 0-4294967295.
(Reserved) – registers used for development use only.
R/W* - writable in manufacturing.
† - 32bit register contains data that spans two registers – reads and write of data needs
to be performed within the same Modbus command function to ensure coherency of
data.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
19
Table 3. Diagnostic Fault Flags
Hex Value Bit Mask Description Value Bit Definition
0x8000 1000 0000 0000 0000 Fault in N.V. Memory – system has restored
default settings 32768 15
A memory fault has occurred and the actuator has
been restored to factory defaults. Contact your
Emerson sales office.
0x1000 0001 0000 0000 0000 System or Watchdog fault 4096 12 The RPU-100 has experienced a fatal error and
restarted. Contact your Emerson sales office.
0x0100 0000 0001 0000 0000 Fault in N.V. Memory – system unable to restore
system settings 256 8
A memory fault has occurred and the actuator
cannot be restored to factory defaults. Contact
your Emerson sales office.
0x0800 0000 0000 1000 0000 Operating Normal 128 7 The RPU-100 is operating normally and monitoring
for power loss events.
0x0040 0000 0000 0100 0000 Charging 64 6 The RPU-100 is charging.
0x0020 0000 0000 0010 0000 Providing Backup Power 32 5 Backup power is being provided to the actuator.
0x0010 0000 0000 0001 0000 Reduced Capacitance 16 4 Reduced capacitance has been detected. Contact
your Emerson sales office.
0x0008 0000 0000 0000 1000 Non-functional 8 3
The RPU-100 is currently non-functional. If over
current protection is also active, correct over
current situation and recheck. Contact your
Emerson sales office.
0x0004 0000 0000 0000 0100 Disabled 4 2
Normal operation of the RPU-100 has been
disabled via the Disable Switch. Backup power will
not be provided on event of power loss.
0x0001 0000 0000 0000 0001 Overcurrent Protection Active 1 0 An over current has been detected and the output
of the RPU-100 has been temporarily disabled.

Instruction Manual
D104551X012
easy-Drive RPU-100
May 2021
20
Appendix B - Certificate of Conformance
-continued-