Omron DDAA1000/SRM manual Troubleshooting

Page 16

DDAA1000/SRM User Guide

Troubleshooting

I have the units setup on a bench for testing, but the Master’s status LED keeps flashing or is solid and I do not have a carrier.

When shipped, the units are setup for a maximum transmit power of 1 watt. If there are only a couple feet of separation between them, the supplied whip antenna may need to be removed. Note that this will not damage the unit.

The units are installed in the field, but I have a flashing or solid LED on the status and no carrier.

The Master’s status LED only comes on when a responce from a remote is not obtained after 3 tries, then the Master moves on to the next Remote. A solid light indicates that the Master can not connect to any remotes. A blinking light indicates that the Master has lost communication with at least one remote. Most likely problem is a radio line-of-sight problem exists If external antennas are being used, verify that they are grounded and that line of sight exists. Also verify that the input power is OK. A UPS is recommended in areas where clean power may not exist. If units are bench tested, and ther is no communications, then you may have a mis-configured system. If the system has been working and then fails, check for cable and antenna connections, and DC power levels.

The power LED on one or both of my units is out and I have no communication.

Try cycling power on either of the units, the resettable fuse may have tripped. If communications do not come up again, verify that there is power to the device. The supplied wall transformer output is nominally around 18 VDC when the radio is not transmitting, and drops to 12 VDC when the transmitter is on. If the supply is okay and cycling power does not fix the problem, contact Data-Linc Group.

My analog output reads 4 mA all the time.

Verify that the connection of the transducer at the transmitter is okay. Put a milliamp meter in the loop, and verify that the connected transducer is supplying more than 4 mA into the unit. Verify that the correct current polarity is used. Note that Data-Linc Group unit does not supply loop power.

My analog output is 0 or below 4 mA.

Contact Data-Linc Group. The analog output has failed. This is a hardware problem.

The discrete output will not activate my relay.

The discrete output of the DDAA1000 or DD1000 does not supply power for a relay coil. Refer to the open collector diagram for connections.

My relay switches on and off constantly.

Verify that the Master’s status LED does not light. The status LED refers to loss of RF communication data stream. Make sure the relay coil does not require more than 100 mA. The discrete outputs can only sink 100 mA.

The relay never switches.

Verify that the switch on the input side is wired properly to the DDAA1000 or DD1000. Check the discrete output with a multimeter. Set the meter for continuity and place the “+” lead on the “G” or common terminal and “-” on the correct discrete output.

14

DATA-LINC GROUP

PN 161-09981-002C

rev 8/04

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Contents DDAA1000/SRM FCC Notification Product User GuideTable of Contents DATA-LINC Group Introduction DDAA1000 and DD1000Antenna Connectoin Type Power ConnectorTeminal Block Discrete Operation ConnectionsPoint-to-Point Discrete Operation Master RemotePoint-to-Multipoint Discrete Operation MasterSupply loop power Analog OperationPoint-to-Point Analog System Needed. The DDAA1000 unites do notConnection of a flow meter to the DDAA1000/SRM unit Master or RemoteFactory Configuration Process Point-to-Multipoint Analog SystemPoint-to-Multipoint Analog Operation Point-to-Multipoint Analog Example RemoteChanging System or Radio Configurations Layout DrawingTechnical Specifications Troubleshooting Product Warranty Return Material AuthorizationTechnical Support Contact InformationAppendix a TOPDDAA1000 DD1000 Configuration Appendix BDATA-LINC Group Ddaa Eeprom MENU** *SET Caplck DATA-LINC Group Appendix C Radio Configuration Terminal SettingsMain Menu Main Menu Option 0 Set Operation Mode Point-to-point MasterPoint-to-Point Remote Point-to-Multi-Point MasterPoint-to-Point Remote/Master Switchable DDAA1000/SRM User Guide Point-to-Point Remote/RepeaterPoint-to-Point Repeater Point-to-Multi-Point RepeaterAvailable data word length and parity selections Main Menu Option 1 Set Baud RateModBus RTU Main Menu Option 2 Edit Call Book Call Book MenuEdit Call Book in Multi-Point Systems Entry Number Repeater 000-0000FreqKey Main Menu Option 3 Edit Radio Transmission CharacteristicsMax Packet Size and 2 Min Packet Size Selections DDAA1000/SRM User Guide Minimum Packet Size Settings bytes Maximum Packet Size Settings where RF Data Rate=3Xmit Rate RF Data RateDDAA1000/SRM User Guide RF Xmit Power Power Transmit SettingsRemote Security RTS to CTSHigh Noise DDAA1000/SRM User Guide Lowpower ModeMCU speed Average Signal Level Main Menu Option 4 Show Radio StatisticsAverage Noise Level Overall Rcv Rate %DDAA1000/SRM User Guide Number of Disconnects Radio TemperatureMulti-Point Operation Main Menu Option 5 Edit Multi-Point Parameters Multi-Point ParametersDiagnostics Remote/RepeaterSubNet ID Radio IDMain Menu Option 8 Password Changing a Password Disabling PasswordDDAA1000/SRM and DD1000/SRM Placement Locations
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