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PIPETRAB Installation Instructions Instructions 1327B
Juni 2008
REQUIRED TOOLS : The wiring connections to the PIPETRAB circuit are made via reliable Phoenix Contact terminal blocks. A small flat head screw driver is required. Additional tools include a wire stripper and pipe wrench.
Product Description The PIPETRAB S-PT1-2PE-24DC field mounted surge suppressors are specially designed for protection of field mounted control devices. The PIPETRAB is packaged in a 3/4” 304 stainless steel pipe nipple to provide environmental protection of the suppression electronics.
Installation Procedures Disconnect loop power before installing the PIPETRAB product. Choose the installation location.
The S-PT1-2PE-24DC surge protection circuit is a two-stage protection device. High energy handling gas tubes are in place to handle the larger surges common in field mounted applications. The surge arresting diode part of the circuit keeps the clamping voltage to a low and safe level.
Prepare the PIPETRAB S-PT1-2PE-24DC for installation. Unscrew the cap from the pipe nipple. Remove the protection element from the pipe nipple.
The suppression electronics are removable and feature screw clamp connections, allowing the user an easy installation. No wire nuts or additional crimp connectors are required.
Prepare the signal wire for connection to the PIPETRAB by stripping approximately 6 mm insulation from each wire. There should be four wires total; two going to the field mounted device and two going back to the control device.
Used with the Phoenix Contact DIN-rail mount SURGETRAB or PLUGTRAB products the system provides total protection of sensitive control signal circuits.
General Installation Guidelines Read all instruction procedures before starting installation . The PIPETRAB should be installed by an authorized electrician or instrumentation technician. Observe all relevant local electrical safety regulations and guidelines for installation. The operating voltage of the system must not exceed that of the arrestor (28 VDC max ). INSTALLATION LOCATION: The PIPETRAB should be installed as close as possible to the sensitive electronic equipment. This installation can be made by connecting the pipe nipple directly to the chassis of the device, or with the use of a T-Coupler fitting at the conduit entrance to the device. The thread size of the PIPETRAB is 3/4” NPT. A thread adapter can be used if other fitting sizes are needed (not supplied). Phoenix Contact Inc. • P.O. Box 4100 #5600368
Figure 1. Pipetrab Wiring Diagram
Harrisburg, PA 17111
1
Phone: (717) 944-1300
Fax: (717) 944-1625
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Installation Procedures Continued Pull all four wires through the pipe nipple (see Figure 1.). Install the PIPETRAB nipple into its mounting location while holding the four wires outside the top of the nipple. Tighten nipple finger tight and then an additional quarter turn. Use a pipe wrench if necessary. Connect the PIPETRAB protective element to the our wires outside the nipple (in series with the loop). The direction of installation is determined by “IN” and “OUT” designations on the PIPETRAB circuit board. Surge Suppression devices must be connected upstream of the signal input to be protected so that “IN” points toward the direction from which the surge voltage is expected. The incoming field cable should be connected to the “IN”. The signal input of the device should be connected to the terminal blocks marked with “OUT”. Replace the PIPETRAB circuit board into the pipe nipple. Reattach the cap over the grounding disk. Tighten cap finger tight and then an additional quarter turn.
Figure 3. Connection Detail for Typical Process Transmitter Installations
Grounding Procedures Surge protective devices (SPDs) operate by “diverting” unwanted transient energy away from sensitive electronics to ground. Therefore, the reliability and efficiency of any SPD is dependent upon a good earth ground connection. A ground of 5 ohms or less is optimal. Installations with ground established. The surge discharge path of the PIPETRAB is automatically connected to the pipe nipple when assembled. No additional ground connections need to be made. If the installation is directly to a transmitter chassis, the chassis must be grounded. If connecting to a Tcoupler, make sure that the conduit at this point is connected to earth ground. The PIPETRAB must be grounded for effective operation.
Figure 2. Connection Detail for "T-Coupler" Installations Phoenix Contact Inc. #5600368
P.O. Box 4100
Harrisburg, PA 17111
2
Phone: (717) 944-1300
Fax: (717) 944-1625
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Grounding Procedures (cont'd)
Specifications Table 1. General Specifications
Installations without a ground reference. If installing to a conduit or transmitter housing that is not grounded, a ground path will need to be established. Option #1 - Connect the PIPETRAB protective element directly to the ground screw within the transmitter housing. To do this, remove the grounding disk (see Figure 4.) and run the ground wire back to the earth ground reference inside the transmitter head. Attach a longer ground wire with a splice if necessary. Option #2 - Strap a #6 AWG or larger copper conductor to the PIPETRAB nipple with a stainless steel clamp. Route this #6 AWG ground wire as straight as possible to the closest grounding system connection. Or, drive a ground rod at the installation location.
Figure 5. Circuit Schematic Diagram
Figure 4. Grounding Procedures
Phoenix Contact Inc.
P.O. Box 4100
Harrisburg, PA 17111
3
Phone: (717) 944-1300
Fax: (717) 944-1625 #5600368
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Application
Figure 6. PIPETRAB Typical Application Drawing
The information given herein is based on data believed to be reliable, but Phoenix Contact Inc. makes no warranties expressed or implied as to its accuracy and assumes no liability arising out of its use by others. This publication is not to be taken as a license to operate under, or recommendation to infringe, any patent.
Headquarters, U.S. Phoenix Contact Inc. P.O. Box 4100 Harrisburg, PA 17111-0100 Phone: (717) 944-1300 Fax: (717) 944-1625 Email: info@phoenixcon.com Web Site: www.phoenixcon.com Technical Support or Information Phone: 1-800-322-3225 Documentation Fax: 1-800-944-9901 Headquarters, Canada Phoenix Contact Ltd. 235 Watline Avenue Mississauga, Ontario L4Z 1P3 Phone: (905) 890-2820 Fax: (905) 890-0180
Part #5600368 MNR. 9739848_01/19.06.2008
Instructions 1327B
Š PHOENIX CONTACT 2008
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