Analog Signal DIN Fiber Link System

Transcription

1 USER GUDE RLH ndustries, nc. The leader in rugged fiber optic technology. U C1027 Analog Signal DN Fiber Link System SYSTEM NSTALLATON NFORMATON Description The Analog Signal DN Fiber Link system transmits an analog data signal, 4~20mA or 0~10VDC, over one optical fiber. This system is designed to provide highly accurate signal transmission at a high sample rate. Compatible with most PLC's, Sensors (2, 3, or 4 wire), and other types of equipment where a precise current or voltage measurement needs to be taken and transmitted over fiber. The system comprises of a transmitter () and a receiver (), each enclosed in a compact DN and wall mountable housing. This compact and rugged system provides convenient and easy to read LEDs, supports both singlemode and multimode fiber applications, and includes an alarm on the receiver enabling system health monitoring. RLH Fiber Link systems are designed to operate over an extreme temperature range, providing reliability in harsh environments. t is made in the U.S.A and is covered by our Limited Lifetime Warranty. 4~20mA System Designed for equipment to measure a 420mA current signal at the transmitter and to output a 420mA signal at the receiver. 420mA systems are less susceptible to noise interference, can easily detect an open circuit, and current measurement remains the same in any point of the signal path. 0~10VDC System Designed to measure a 010VDC signal at the transmitter and output the same 010VDC signal at the receiver. The 010VDC fiber system extends the measurement of voltage signals over long distances without compromising accuracy and reliability. Analog Signal DN Fiber Link System Standard Features Convenient LED status indicators Available with ST or SC connectors, single or multimode fiber Precision measurement, high degree of accuracy 24VDC local power source required for each unit Pluggable terminal blocks Alarm contact for status monitoring Environmentally rugged with wide operating temp. 40 F to 158 F (40 C to 70 C) Standard T35 DN rail or wall mount applications Limited Lifetime Warranty Designed and Made in the U.S.A. RLH ndustries, nc. Tel. 866DO Fax Page 1

2 General Safety Practices The equipment discussed in this document may require tools designed for the purpose being described. RLH recommends that service personnel be familiar with the correct handling and use of any installation equipment used, and follow all safety precautions including the use of protective personal equipment as required. Caution Severe Shock Hazard Never install during a lightning storm or where unsafe high voltages are present. Use caution when handling copper wiring and follow appropriate safety regulations. Guidelines for Handling Terminated Fiber Cable Do not bend fiber cable sharply. Use gradual and smooth bends to avoid damaging glass fiber. Keep dust caps on fiber optic connectors at all times when disconnected. Do not remove dust caps from unused fiber. Keep fiber ends and fiber connectors clean and free from dust, dirt and debris. Contamination will cause signal loss. Do not touch fiber ends. Store excess fiber on housing spools or fiber spools at site Acronyms Commonly used acronyms, terminology, and abbreviations. Acronym/Abbreviation PWR NC COM NO T Transmit Receive Power Normally Closed Common Normally Open 420mA Transmitter Description RCV Sinking Sourcing 420mA nput/receiver Does not provide voltage, expects a from the incoming signal. Provides a voltage on the 420mA signal. Page 2 RLH ndustries, nc. Tel. 866DO Fax

3 Applications By utilizing fiber optic cable, the 4~20mA / 0~10VDC Analog Signal system provides absolute electrical isolation between both ends of the communications network. t is immune to EM/RF interference, ground loops, and high voltage surges from lightning or ground faults, and is ideal in electrically noisy environments such as near large power sources, electrical motors, and radio communications equipment. Network and control equipment in high voltage areas can be at risk due to Ground Potential Rise (GPR). A copper network cable referenced to a remote ground can become a path for high voltages during a ground fault. Placement of alldielectric fiber optic cable (instead of copper) completely eliminates the presence of a remote ground, which dramatically increases safety of personnel and reliability of equipment. System Diagram Fiber Optic Cable Up to 74 miles / 120km 2448VDC Power Supply 2448VDC Power Supply MEDA MEDA MEDA LNK Copper Pair nput LNK MEDA Transmitter () Copper Pair Output Receiver () Typical System Diagram RLH ndustries, nc. Tel. 866DO Fax Page 3

4 420mA System Loop Powered 2Wire Transmitter to Sinking nputs Connecting a 2wire 4~20mA Transmitter to the RLH device (AD420XX1) which features a sinking input with 24VDC Loop Voltage provided by a separate power. Typical Configuration for Loop Powered Sensors (Flow, Temperature, Pressure, etc ). 24VDC Power Supply T Sinking Output Customer Control Equipment AD420XX1 RCV Sinking nput RLH Fiber Link Transmitter Fiber Optic Cable AD420XX1 T Sourcing Output RLH Fiber Link Receiver RCV Sinking nput Customer Control Equipment Extending a Loop Power 420mA Transmitter over Fiber 420mA System Sourcing 2Wire Transmitter to Sinking nputs Connecting a 2Wire 4~20mA Transmitter to the RLH device (AD420XX1) which features a sinking input. Typical configuration for 420mA sourcing transmitters (PLCs, DCS, Calibrators, Etc...) AD420XX1 AD420XX1 T Sourcing Output Customer Control Equipment RCV Fiber Optic Cable T RCV Sinking nput Sourcing Output RLH Fiber Link RLH Fiber Link Sinking nput Transmitter Receiver Customer Control Equipment Extending Current Sourcing 420mA Transmitter over Fiber Page 4 RLH ndustries, nc. Tel. 866DO Fax

5 nstallation Prior to installation: Check for shipping damage. Check the contents to ensure correct model and fiber type. Have a clean, dry installation environment ready. Ensure that the fiber type at the site matches the system type. Required for installation: 24VDC power source at both installation sites. DN rail for mounting, or wall space for wall mounting. Multimeter Measure the DC voltage of the source power to ensure that it is 24VDC. All electrical and fiber optic connection are made directly onto the unit. Front Panel The front panel contains the input or output contact terminals, LED s, and the or fiber port. Top View 3.93 NC COM ALARM NO PWR PWR Transmitter () Receiver () DN Rail Clip System dentification 1.20 Power Terminals Alarm Terminals LED ndicators LNK Fiber Optic 4.93 Contact Terminals MEDA MEDA Transmitter () Front View Receiver () Side View RLH ndustries, nc. Tel. 866DO Fax Page 5

6 DN rail mounting The DN clip for mounting the system is mounted onto the rear panel. Hook the DN clip on the top flange of the DN rail and rotate to the locked position to install. To remove, push up to depress the spring latch and rotate off of the DN rail. DN Rail DN Rail Click Push Up nstallation Removal DN Rail Mounting Wall mounting The system can be easily wall mounted by attaching the provided wall mount ears and hardware. Attach the wall mount ears by following the instructions below Wall Mount Kit Remove screws. Attach Wall Mount Kit. Mount to wall using supplied hardware. Connect Equipment Left Side Right Side Wall Mounting Page 6 RLH ndustries, nc. Tel. 866DO Fax

7 Connect Fiber Optic Cable Connect fiber to the transmit and receive optical connectors on the front of the units. Fiber cable should always be routed loosely avoiding tight bends. Once the system is properly connected the Link LED, on the receiver unit, should turn ON. Connect Copper Wire Pairs The wire pairs from the sensor or controller equipment connect to the green screwdown terminals on the transmitter and receiver modules labeled nput and Output. Observe polarity on the input and output connectors. The contact terminals may be removed and accept wire sizes 16~26 AWG. Fully seat the terminal block back into the connector before operating the system. Receiver Alarm Contact Wiring The contact will alarm when the fiber link is down or a power failure. Use the NO or NC contact positions as required. The alarm terminal block may be removed and accept wire sizes 16~26 AWG. Fully seat the terminal block back into the connector before operating the system. Connect Power Ensure power supply is OFF prior to wiring the system. Connect a 24VDC power supply to the screwdown terminals labeled PWR located on the top of the unit. Requires one (1) 24VDC power supply on each side of the system. Fully seat the terminal block back into the connector before operating the system. Note: Power input is NOT polarity sensitive. NC COM NO ALARM PWR NC COM NO ALARM PWR Top View of Power & Alarm Terminals RLH ndustries, nc. Tel. 866DO Fax Page 7

8 LED dentification LNK Detail of nput LED s LNK DetailCONTACT of Output LED s CLOSURE OVER MEDA MEDA Transmitter Receiver NC Analog Signal Fiber Link System COM CONTACT CLOSURE OVER LED NO Description DC nput Power LNK System Link Analog nput Analog Output Status Condition ON OFF ON OFF On Off Blinking On Off Blinking DC input power OK DC input power Failed Fiber Link OK Fiber Link Failed Signal Present No Signal Present Signal Over Range Signal Present No Signal Present Signal Over Range Troubleshooting f trouble is encountered, verify all copper and fiber connections, signal and voltage levels. f the alarm is on, check the fiber cable and connections, or the other units power source and connections. f trouble persists, contact RLH ndustries, nc. technical support department: (6 am to 6 pm PST), or call our 24/7 Technical/Customer Service: (714) or (714) Page 8 RLH ndustries, nc. Tel. 866DO Fax

9 Ordering nformation Each 4~20mA or 0~10VDC Analog Signal DN Fiber Link unit is identified with a part number. System Part Numbers Optics Distance μm Description 4~20mA 0~10VDC Multimode SC 2km / 1.2 mi 62.5/50 μm Transmitter AD AD Receiver AD AD Multimode ST 2km / 1.2 mi 62.5/50 μm Transmitter AD AD Receiver AD AD km / 12.4 mi. Transmitter AD AD Receiver AD AD Singlemode SC 60km / 37 mi. Transmitter AD AD Receiver AD AD km / 74 mi. Transmitter AD AD Receiver AD AD km / 12.4 mi. Transmitter AD AD Receiver AD AD Singlemode ST 60km / 37 mi. Transmitter AD AD Receiver AD AD km / 74 mi. Transmitter AD AD Receiver AD AD A complete system requires a Transmitter and a Receiver. Please contact your RLH sales representative for pricing and delivery information. RLH ndustries, nc. Tel. 866DO Fax Page 9

10 General Specifications Transmission method Maximum Fiber Attenuation /Distance Connector Type Frequency modulated light via a single optical fiber Multimode: Singlemode: Singlemode Long Haul: Multimode: Singlemode: 1310nm (62.5/125µm, 50/125µm) 1310nm (89/125µm) 1550nm (89/125µm) 8dB / 1.2 miles (2km /2dB 12dB ~ 25dB (20km120km) /2dB Note: Distances equated using industry standard fiber and connector attenuation. Fiber condition, splices, and connectors may affect actual range. ST or SC connectors System Accuracy 4~20mA Model 25C & 24VDC 0~10VDC Model 25C & 24VDC Note: Accuracy for Fiber Link System, Both Transmitter & Receiver Ambient Temp Effect: Update Rate: Signal Resolution: Sensitivity: Voltage Operating Range: Current Operating Range: Approximately 5C Change 1.3 Khz 12 Bits 2^12 (4096) Steps 0 11VDC 0mA 22mA (DC) Analog Sinal 4~20mA System 0~10VDC System Analog nput Analog Output Power Requirements Wire Connector DC nput solation Surge Protection Over Current Protection Operating Temperature Dimensions 1 Singleended (unipolar) mpedance: 250 Ohms 200K Ohms Protection: / 50mA / 30V 1 Singleended (unipolar) Loop Voltage: 23.7VDC Maximum Loop Resistance: 1000 Ohms 1000 Ohms Protection: / 32mA / 32mA 24 48VDC Screw clamp terminal blocks, 16 ~ 26 AWG 1.5KV PTC thermistors, zener diodes and varistors 0.5A (Automatic Recovery) Transmitter 3 Watts Max. Receiver 4 Watts Max. 40 to 158 F (40 to 70 C), 95% noncondensing H4.93 x W1.2 x D3.5 (100mm x 31mm x 89mm) Not including connectors Warranty Limited Lifetime Visit for warranty details RLH ndustries, nc. 936 N. Main Street, Orange, CA USA T: (714) F: (714) Please contact your RLH sales representative for pricing and delivery information. Specifications subject to change without notice. Page 10 RLH ndustries, nc. Tel. 866DO Fax