Wireless Instrumentation: Phoenix Contact RAD-ISM-900-SET
Contents
1. PHCENIX CONTACT Wireless Interface RAD ISM 900 SET AC UD One way Point to point Monitoring or Control User Manual The RAD ISM 900 SET AC UD is a Frequency Hopping Spread Spectrum radio designed for the professional installation and integration with other products When installed with an approved antenna and cable the system integrator needs to make sure that the unit s FCC label or a copy of that FCC label is clearly visible on the outside of the integrated product The RAD ISM 900 SET AC UD is approved within the 902 to 928 MHz ISM Band under Part 15 of the FCC Rules and Regulations Frequency hopping spread spectrum technology was originally developed by the U S military to prevent interference or interception of radio transmissions on the battlefield Frequency hopping devices concentrate their full power into a very narrow signal and randomly hop from one frequency to another within a designated frequency band If they encounter interference on a particular frequency the devices error check the affected data hop to another point on the spectrum and resume communications on subsequent hops Since there are always spaces without interference somewhere in the allotted radio spectrum a frequency hopping device will use those spaces to complete a transmission 99 9 NOTICE These devices must be wired in accordance with Class I Division 2 wiring methods as described in the National Electrical Code Article 501 4 b or th2. Input 1 Discrete Input 2 RF Link 4 20mA Output e Ground power and 4 20mA 9 to 30VDC Power e 11 Discrete Output on Receiver Indicator LED s Flashes once every two seconds when transmitter is OFF or out of range Flashes rapidly when signal strength is marginal Solid green when a secure link is established Show status of discrete inputs 1 amp 2 Solid green ON LED s 1 amp 2 RF Link Internal dry contact Form C relay May be wired as Normally Open NO or Normally Closed NC This relay is activated when a good Radio RF Link is established between the Receiver and its matched Transmitter DEFAULT STATE When Link is lost between the Transmitter and Receiver this discrete output defaults to the normal position as shown in the Receiver Block Diagram Discrete Outputs 1 amp 2 Internal dry contact Form C relays May be wired as NO or NC These relays are activated when voltage is applied to Discrete Inputs 1 amp 2 at the Transmitter DEFAULT STATE When Link is lost between the Transmitter and Receiver these discrete outputs MAINTAIN LAST STATE Analog Output The 4 20mA Current Output replicates the status of the 4 20mA Current Input at the Transmitter DEFAULT STATE When Link is lost between Transmitter and Receiver the analog output MAINTAINS LAST STATE NOTE Incorrect antenna placement and positioning can have a significant impact on the performance of the RAD ISM 900 SET AC UD Keep the Omni an
3. OTE Current rating of RF Link Contact is 0 5A max Meter 4 20mA Analog 4 20mA Wiring Likewise if the Analog signal is required to drop to zero 0 Current when RF Link is lost it can be wired in series to the RF Link Output in this fashion NOTE Either the Discrete Outputs or the Analog can be wired through the RF Link contacts but not both Receiver 6 5 4 Maximum OFF voltage for the discrete input is 60VAC Use of a 2Watt 10k ohm resistor at 110VAC in parallel across Po P the input will help to ensure minimum and maximum ON and 2 OFF states POWER 24V GND _ft 20MA RF LINK NC COM NO Warning Light Example B RF Link Contact is wired to a warning light using the NC O RF T Contact As soon as the RF Link has been established this contact will go to Open and the warning light will go out Cra O1 The 4 20mA Analog output has been wired directly to a meter or Pump RTU PLC device and will MAINTAIN LAST STATE if the RF Link is lost e DISCRETE o An interesting feature in this example is wiring of the pump Discrete Output 1 has been wired through the NO Contact and DDA through the RF Link NO Contact This immediately shuts off of a the pump if the RF Link is lost By wiring through the RF Link Contact in this way the RF Link Contact will go Open when the RF Link is lost and the pump will shut down This overrides the DO default for Discrete
4. Output 1 which MAINTAINS LAST STATE 10 11 12 NOTE The RAD ISM 900 AC Receiver Analog Output is a 3 Wire device and should be wired to the RTU PLC just as you would a normal 3 Wire Current Loop Device This wiring configuration is for the Receiver only and must be followed regardless of the type of Current Loop device on the Transmitter side of the loop i e 2 Wire 3 Wire or 4 Wire Adding an Extra or Spare Receiver to your System 1 Remove the HopKey from the existing receiver by popping the divots on either side of the enclosure and removing the circuit board refer to the photographs Remove the Hopkey and re insert the circuit board into its enclosure When re inserting line up the terminal labels on the side of the enclosure with the terminal labels on the top of the circuit board to prevent it being installed backwards 2 Remove the spare receiver from its enclosure 3 Insert the HopKey from the original receiver into the spare receiver Re insert the circuit board into the enclosure Once power is applied to the spare receiver it will memorize the identification hop frequencies and hop sequence of the transmitter This takes a few seconds upon power up If power is removed it will retain this information even if the HopKey is removed Now your spare receiver along with the original receiver will both respond to signals from the transmitter Ensure you are using an omni directional antenna at the tran
5. alog Input 4 20mA Green White Black Used in 3 and 4 Wire Current Loops Red Ground Neutral elke 100 to 240VAC g Discrete Input Common Grey Orange Yellow Discrete Input 1 Discrete Input 2 Floating RAD ISM 900 AC Transmitter 4 20mA Current Loop with 4 Wire Device Customer Supplied Wiring amp Equipment Ground Neutral Power Neutral Black 100 to 240VAC 0 5A Fast Blow Fuse Gray Discrete Inputs Common Discrete Input 1 Discrete Input 2 4 20mA Current Loop Wire Externally Powered 2Wer Externally Powered Current Source Analog Input 4 20mA Green White Neutral Black 400 to 240VAC Used in 3 and 4 Wire Current Loops Ground i l Blue g Discrete Input Common Grey 4 Discrete Input 1 Orange Discrete Input 2 Yellow Floating RAD ISM 900 AC Transmitter 4 20mA Current Loop with 3 Wire Device Customer Supplied Wiring amp Equipment Ground Neutral Power Neutral Black UUU 100 to 240VAC 0 5A Fast Blow Fuse Gray Discrete Inputs Common NOTE DC Power Supply Output on Red Wire is rated at 25mA max If end device requires more than 25mA then an additional Power Supply will be required to meet the manufacturers requirements for the end device GUU UUU Used in 3 and 4 Wire Current Loops Red Blue 4 20mA Device Current Source Analog Input 4 20mA Brown 100 to 240VAC I Discrete Input Common Grey Orange Yellow Discrete
6. e authority having jurisdiction Transmitter unit is to be used with a purely resistive antenna when installed in Class l Division 2 areas WARNING EXPLOSION HAZARD Do not disconnect equipment unless power has been switched off or the area is known to be non hazardous FCC Rules and Compliance This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation Changes or modifications not expressly approved by Phoenix Contact will void the user s authority to operate the equipment This product is intended for fixed installation applications In order to comply with FCC ISC adopted RF exposure requirements installation of this transmitter system s antennas must be performed in a manner that will provide at least a 6 foot 2m clearance from the front radiating aperture to any user or member of the public Part 15 247 RSS 210 Class I Div 2 Groups A B C D PHCENIX CONTACT Rev 1 8 RAD ISM 900 AC Transmitter 4 20mA Current Loop with 2 Wire Device Customer Supplied Wiring amp Equipment Ground Neutral Power Neutral Black 100 to 240VAC 0 5A Fast Blow Fuse Gray Discrete Inputs Common Discrete Input 1 Discrete Input 2 Red ae 4 20mA Current Loop Blue 2 wire Current Source An
7. smitter if the receivers are off in different directions since yagi directional antennas only send radio signals in one direction Specifications Transmitter Receiver 40 C to 70 C 40 F to 158 F inputs Outputs Oe vn rte ay cog Rane 4 tS miles Omni gt 15 miles Vag LO S 4 to 5 miles Omni gt 15 miles Yagi LOS MAX Loop Impedance N A 150 to 1350 ohms for power eee a S Dimensions Transmit Power TA Repeatability 4 20mA Accuracy 4 20mA i 1 2 NPT female mount vertical Environmental Maximum Loop Impedance VIN 9V 20mA PHCENIX CONTACT
8. tenna vertical and mounted as high as possible Extra cable may be required to achieve Line of Sight L O S between the Transmitter and the Receiver For applications that require the antenna to be mounted away from the Transmitter please contact your Distributor for cable and antenna options Always follow the mounting instructions and proper grounding procedures as outlined in the antenna manuals Meter 4 20mA RAD ISM 900 AC Receiver Wiring Examples Example A RF Link Contact is wired to a warning light using the NC Contact As soon as the RF Link has been established this contact will go to Open and the warning light will go out Receiver 4 The 4 20mA Analog output has been wired directly to a meter or RTU PLC device and will MAINTAIN LAST STATE if the RF Link is lost Discrete Output 1 has been wired through the NO Contact When voltage is applied to the Discrete Input 1 side of the Transmitter this contact will go closed and the Pump will start Default OFF Wiring If either one or both of the Discrete Outputs and or the Analog 4 20mA are required to default OFF upon loss of the RF Link with the Transmitter the RF Link Output can be used to provide a Default OFF State Discrete Wiring By wiring the Discrete Output s in series through the NO contact of the RF Link the LAST STATE of the Discrete 2 Output s will be over ridden and forced to go Open N
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