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Schweitzer Engineering Laboratories
2350 NE Hopkins Court
Pullman, WA USA 99163-5603
Tel: (509) 332-1890 FAX: (509) 332-7990

SEL-DTA2

Display/Transducer Adapter

Instruction Manual

Summary of Contents for SEL-DTA2

Page 1: ...Schweitzer Engineering Laboratories 2350 NE Hopkins Court Pullman WA USA 99163 5603 Tel 509 332 1890 FAX 509 332 7990 SEL DTA2 Display Transducer Adapter Instruction Manual...

Page 2: ...ous les raccordements externes avant d ouvrir cet appareil Tout contact avec des tensions ou courants internes l appareil peut causer un choc lectrique pouvant entra ner des blessures ou la mort DANGE...

Page 3: ...des 2 2 Rear Panel Connections and Configurations 2 7 Self Tests 2 10 Section 3 Communications Introduction 3 1 Serial Port Connections and Configurations 3 2 Communications Protocol 3 3 Command Chara...

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Page 5: ...mple Meter Display 2 4 Figure 2 6 Example Frozen Meter Display 2 4 Figure 2 7 Relay Status Message 2 5 Figure 2 8 Relay Status Warning Message 2 5 Figure 2 9 DB25 to Terminal Block Adapter 2 7 Section...

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Page 7: ...le 2 2 Contact Assignments and Signal Descriptions 2 8 Section 3 Communications Table 3 1 Serial Port Pin Assignments 3 2 Section 4 Installation Table 4 1 DTA2 Interface Cables 4 1 Section 5 Maintenan...

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Page 9: ...all changes made to this manual since the initial release 20020329 Reissued entire manual with the following changes Updated formatting of entire manual Reverse of Title Page Added warranty statement...

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Page 11: ...pter offers a simple and economical on line interface to the SEL family of digital relays The features of the SEL DTA2 include Two line 40 column high contrast liquid crystal display supplies relay in...

Page 12: ...age output device The SEL DTA2 also provides access to metering and relay status information A set of eight voltage outputs and eight current outputs presents fault and meter data to monitor and contr...

Page 13: ...rence test type tested Impulse Optoisolated input relay outputs and power supply IEC 255 5 0 5 joule 5000 volt test type tested RFI Tests Type tested in field from a 1 4 wave antenna driven by 20 watt...

Page 14: ...mode recently Figure 2 1 FAULTS Mode Initial Window Positioning Pressing the SCROLL DOWN switch once changes the display window position as shown in Figure 2 2 View any two faults in the 30 event faul...

Page 15: ...y the status mode via detection of a relay status warning METER Commands Access Metering Data or Reset Demand Registers METER displays meter information demand and peak demand information when availab...

Page 16: ...he STATUS mode via detection of a relay status warning Pressing METER once toggles display updating showing the present meter values until the button is pressed again Pressing METER an even number of...

Page 17: ...ntrol 2 A relay status warning forces the SEL DTA2 into STATUS mode When the STATUS control is pressed the SEL DTA2 checks the status of the relay and displays the received status message see Relay St...

Page 18: ...essing CLEAR changes the mode to STANDBY If the SEL DTA2 is already in STANDBY mode the following operations occur 1 The display module is tested for proper operation if this test fails an automatic S...

Page 19: ...d automatic for communications with the relay See Table 3 1 on page 3 2 in Section 3 Communications See Table 4 1 on page 4 1 in Section 4 Installation for a list of cables that connect to Port 1 and...

Page 20: ...oltage output 2 Ground 2 Current output 2 11 24 10 Voltage output 3 Ground 3 Current output 3 9 23 8 Voltage output 4 Ground 4 Current output 4 7 22 6 Voltage output 5 Ground 5 Current output 5 5 21 4...

Page 21: ...ble time interval LOCK controls update of contact outputs A1 A5 and any analog outputs dedicated to fault location During LOCK cycles after a fault outputs are not affected by subsequent faults This f...

Page 22: ...he affected RAM IC to serial Port 1 There is no warning state for this test Read Only Memory The SEL DTA2 checks read only memory ROM by computing a checksum If the computed value does not agree with...

Page 23: ...computer Communications serve the following purposes 1 The SEL DTA2 receives display and transducer configurations 2 The SEL DTA2 responds by message to changes in system self test status 3 The SEL D...

Page 24: ...8 data bits 2 stop bits SEL DTA2 Firmware Revisions 100 400 or 1 stop bit SEL DTA2 Firmware Revisions 500 800 No parity This format cannot be altered Table 3 1 shows serial port pin assignments and si...

Page 25: ...OFF protocol When the buffer drops below full the SEL DTA2 transmits XON ASCII hex 11 and asserts the RTS output The SEL DTA2 transmits XOFF ASCII hex 13 when the buffer fills over full It deasserts t...

Page 26: ...me allows you to give personnel access to only those functions they require Each level has an associated screen prompt and password Figure 3 1 shows the access levels passwords prompts commands availa...

Page 27: ...of three or more characters only the first three characters of any command are required You may use upper or lowercase characters without distinction except in passwords Separate arguments from the co...

Page 28: ...set to TAIL at the factory use the Access Level 2 command PASSWORD to change passwords The following display indicates successful access 2ACCESS ENTER Password SEL DTA Display Transducer Adapter Date...

Page 29: ...and time Use this command when you finish communicating with the SEL DTA2 to prevent unauthorized access Note that control may return to Access Level 0 automatically after a settable interval of no a...

Page 30: ...ating that Transducer Channel 1 reflects the voltage measured from Phase A to Phase B Settings MIN1 MIN8 and MAX1 MAX8 reflect the measured quantities corresponding to 5 V 1 mA or 5 mA and 5 V 1 mA or...

Page 31: ...0 100000 100000 QUA7 Measured quantity Q IA FL MIN7 Min Range 200 0 100000 100000 MAX7 Max Range 200 0 100000 100000 QUA8 Measured quantity FL IA FL MIN8 Min Range 100 0 100000 100000 MAX8 Max Range 1...

Page 32: ...e clock type TIME followed by the desired setting Separate the hours minutes and seconds with colons semicolons spaces or slashes To set the clock to 23 30 00 enter TIME 23 30 00 ENTER or TIME 23 30 0...

Page 33: ...the two EIA 232 serial communications ports are made via two 9 pin connectors labeled Port 1 and Port 2 on the rear panel NOTE Ground pins on connectors should not be relied upon for safety grounding...

Page 34: ...o it connects the pin labeled with the desired port to a pin labeled with the desired baud rate Available baud rates are 300 600 1200 2400 4800 and 9600 Baud rate settings for the SEL DTA2 must match...

Page 35: ...4 3 Date Code 20020329 SEL DTA2 Instruction Manual Installation Installing the DTA2 Figure 4 2 SEL DTA2 Parts Placement Diagram...

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Page 37: ...DTA2 Personal computer with EIA 232 serial communications interface Cable configured for interconnection of SEL DTA2 and terminal Cable configured for interconnection of SEL DTA2 and SEL relay Meter c...

Page 38: ...4 Installation includes information on baud rate selection Step 3 With the SEL DTA2 disconnected from the relay turn on the target relay and set the relay Access Level 1 and 2 passwords to the SEL fac...

Page 39: ...es of acquired status data appear on the display Use the SCROLL switches to view all lines of status data Holding a SCROLL switch in automatically repeats the control If the SEL DTA2 is unable to retr...

Page 40: ...tact and analog output fault lockout period and automatic reset timeout while the fourth indicates the fault window settings The remaining lines contain measured quantity and scaling information for t...

Page 41: ...on procedure before disturbing the system After you finish the inspection proceed to the Troubleshooting Table Step 1 Check to see that power to the SEL DTA2 and target relay is on Step 2 Inspect the...

Page 42: ...automatic relay may be equipped with old software which does not support multiple automatic message ports Step 2 Relay baud rate does not agree with SEL DTA2 baud rate Step 3 Improper connection of SE...

Page 43: ...DTA R605 One stop bit Base Product This firmware differs from previous versions as follows 2 1 2 element power calculation for delta fast meter SEL 251 demand and reset demand peak Fast meter single...

Page 44: ...with the SEL DTA2 firmware Table A 2 SEL Relay Models Compatible With the SEL DTA2 Relay Model Numbers SEL 49 SEL 121 1 2 2A 3 4 5 6 8 SEL 121 221 10 16 17 SEL 121B 221B 1 SEL 121C 221C 1 SEL 121D 22...

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