Relcom FPS-I User manual

Installation
Instructions FPS-I and FPS-2
Redundant
Fieldbus
Power System
Installation
WARNING: Do not remove or install an Isolated Power Module (IPM) unless the area is known
to be non-hazardous.
Refer to the Control drawing included in this document for a typical installation. The drawing is intended
to address the safety aspects of Class I, Division 2 areas. Actual segment connections may vary depending
on factors such as the required number of Fieldbus segments.
Mounting
Relcom redundant Fieldbus Power Systems (FPS) are designed for mounting on 35mm DIN rail inside
of an enclosure with a minimum rating of IP 54. Use of DIN rail end stops is recommended.
DIN rail mounting may be horizontal or vertical.
Note: Operating temperature range is -40°C to 50°C if installed on vertical DIN rail.
Once all wiring connections have been made, the retaining screws on each pluggable cable connector
should be securely fastened.
1010.1 Equipment Information
Equipment Class II, Pollution Degree 2, Installation Category I
Maximum Altitude: 2000m
Humidity: 0 to 90% (non-condensing)
Operating Temperature: -40°C to 60°C (-40°C to 50°C if installed on vertical DIN rail)
For Indoor Use Only (IP 54 minimum enclosure)
Input Power Supply Connections
For redundant operation, two separate input DC
power supplies should be connected to each FPS.
Four pairs of terminals are provided on each FPS for
this purpose; two pairs for each input power supply.
The extra pair of terminals for each input power
supply are intended to be used for connection to
another FPS installed immediately adjacent to the
first. A prefabricated jumper assembly is included
with each FPS for this purpose.
In most installations the distance from a bulk power
supply to the FPS is less than 30m. If the distance
from the bulk power supply to the FPS is in excess
of 30m, then a suitable Surge Protection Device
should be used.
When multiple Fieldbus Power Systems are wired
together using jumper assemblies, redundant con-
nections should be made to the two input power
supplies using the terminal pairs located at each
end of the row of systems. An example of multiple
systems wired this way is shown in Figure 2.
2221 Yew Street
Forest Grove, Oregon 97116 USA
[phone] or [phone]
Fax [phone]
www.relcominc.com
500-272 Rev E.0
Figure 1
18-30 VDC
Power Supply B
18-30 VDC
Power Supply A
System
Alarm
TLast Module
Jumper Wire
18-30 VDC
Power Supply B
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable








S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
Page 1 of 3

Input Power Supply Connections (continued)
Multiple segments can be wired together using the supplied jumper assemblies. Relcom recommends a
maximum of eight wired together segments based upon a maximum current limit of 8 Amps to the input
power terminals of the FPS units. Both of the input power supplies (indicated in Figure 2 as “Power Supply A”
and “Power Supply B”) should be connected to the terminals at each end of the array of FPS units. When
wired this way, any one of the eight units can be disconnected from the system without interrupting the
operation of the others.
Note that the alarm terminals are connected to the system alarm at one end of the array and that the two
terminals at the opposite end are connected to one another using a short length of wire. When wired in this
way, the normally closed alarm circuit will open if a fault occurs in either of the input power supplies or any of
the isolated power modules.
2221 Yew Street
Forest Grove, Oregon 97116 USA
[phone] or [phone]
Fax [phone]
www.relcominc.com
500-272 Rev E.0
If a single redundant input power supply is used instead of two separate supplies, connect the input power
supply to one set of terminals at each end of the array of FPS units and install jumpers from the first set of
power supply terminals to the second set at each end of the array. This prevents the alarm circuit from
falsely activating due to a lack of power on the second set of power input terminals.
Fieldbus Segment Terminators
Two terminators are required for each Fieldbus H1 network segment. The FPS-I has one terminator built into
the backplane unit (part number FPS-RCT). This is indicated by the big “T” on the product label. The second
Terminator should be positioned at the opposite end of the segment trunk cable. The FPS-2 has no terminator
built into its backplane unit (part number FPS-RC).
Alarm Wiring Connections
Next to the input power terminals, terminal pairs are provided for connection of the alarm circuit. Refer to
Figure 2. An alarm system is connected to the alarm terminals at one end of the array of FPS modules.
Connect a prefabricated jumper assembly (included with each FPS unit) between each FPS in the array. Each
prefabricated jumper assembly includes a pair of wires for the alarm circuit. Note that if only one FPS unit is
installed, no prefabricated jumper is necessary. Connect a jumper wire across the alarm terminals of the last
FPS in the array as shown.
During normal operation, the alarm circuit is closed. It will open if:
 Either input power supply < 18 VDC
 Output of either power module < 22 VDC
 The Fieldbus is shorted
H1 Host and Fieldbus Trunk Connections
Two 3-conductor (+, shield, and –) connectors are provided for connection to the H1 host and to the Fieldbus
trunk cable.
A Green LED next to the connector labeled “Fieldbus” indicates that power is being supplied to the Fieldbus
segment.
Figure 2
18-30 VDC
Power Supply B
18-30 VDC
Power Supply A
System
Alarm




Last Module
Jumper Wire
18-30 VDC
Power Supply B




T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2 T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
T
FPS-RCT
Fieldbus
H1 Host
Fieldbus
Trunk Cable
S
S
22 23 24
A2
A1




S
15 14 13
16
17
18
19
20
21

S

4
5
6
7
8
9



A1
A2
Page 2 of 3

Testing/Troubleshooting
Check that both Power A and Power B Green LEDs are on. If they are not lit, check the input power
connections.
Check that the Green LEDs on each of the two isolated power modules are on. If they are not lit, check
module connections. If the connection is secure, replace the module.
Check that the Green Fieldbus LED is on. If it is not lit, check the Fieldbus cable and H1 host connection for
short circuit.
If a system alarm is generated, check all LEDs on the FPS units in the alarm circuit. Follow the instructions
above.
Operation
During normal operation, the green Power In A, Power In B, Fieldbus, and Power On LEDs should be lit.
If any of these LEDs are not lit, follow the instructions in the Testing/Troubleshooting section.
Maintenance Requirements
The FPS-I and FPS-2 contain no user serviceable parts. No maintenance is required. Non-functioning units
should be returned to the manufacturer for replacement or repair.
2221 Yew Street
Forest Grove, Oregon 97116 USA
[phone] or [phone]
Fax [phone]
www.relcominc.com
500-272 Rev E.0
For Further Information
Contact your local MTL representative or Relcom, Inc. as listed at the bottom of this page.
Page 3 of 3
Power
Supply 1
Power
Supply 2
24 VDC Power Supply (Typical)
Vout (Max) <= 30 V, Vout (Min) >= 18V
Install According to Power Supply
Instructions to Ensure Maximum
Voltage Output is not Exceeded
Installation must be in accordance with the National Electrical Code
(NFPA 70, Article 504), ANSI/ISA-RP12.6, and CEC Part 1.
Part Numbers:
FPS-I (FPS-RCT and two FPS-IPM)
FPS-2 (FPS-RC and two FPS-IPM)
Minimum Wire Requirements: 24 AWG Stranded.
WARNING:
EXPLOSION HAZARD - DO NOT DISCONNECT
EQUIPMENT UNLESS POWER HAS BEEN SWITCHED
OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.
AVERTISSEMENT:
RISQUE D'EXPLOSION - AVANT DE DECONNECTER
L'EQUIPMENT, COUPLER LE COURANT OU S'ASSURER
QUE L'EMPLACEMENT EST DESIGNE NON DANGEREUX.
HAZARDOUS (CLASSIFIED) LOCATION NON-HAZARDOUS LOCATION
Class I, Division 2, Groups A, B, C, D, T4
Class I, Zone 2 IIC T4 (US only)
Ex nA, IIC, T4 (Canada and CENELEC only)
-40 C <= Tamb <= 50 C
TO BE INSTALLED IN AN IP 54 OR BETTER ENCLOSURE
FPS-I or FPS-2
FPS-RC or FPS-RCT
FPS-IPM
Plugged into Socket
FPS-IPM
Plugged into Socket
Fieldbus
Segment
(Connector
blocks, devices,
terminators, host,
etc.)
Additional
FPS-I or
FPS-2
Units
Fieldbus Output
(+/- Power and Shield)
Power Supplied to Backplane must be fused for
8 A Circuitry.
2221 Yew Street, Forest Grove, Oregon 97116 USA
Title:
Approved By:
+
Control
System
Alarm/