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Summary of Contents for GESTRA SRL 6-50
- Page 1 Logic unit SRL 6-50 Original Installation Instructions 819117-04 E n g l i s h...
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Page 2: Table Of Contents
Dimensions SRL 6-50 ..........................8 Key .................................8 Installing logic unit SRL 6-50 .........................8 Name plate / marking ..........................9 In the system: Wiring the logic unit Wiring diagram for logic unit SRL 6-50 ....................10 Key ...............................11 Tools ..............................12 Wiring terminal strip ..........................13 Basic Settings Factory setting ............................14... -
Page 3: Usage For The Intended Purpose
Usage for the intended purpose The logic unit SRL 6-50 is used in conjunction with the level switches NRS 1-50, NRS 1-51 for moni- toring the separate rinsing of the connecting lines leading to the level pots of externally installed water level limiters or high level alarms. -
Page 4: Safety Note
Important Notes - continued - Function - continued - During operation the standby time is started after the interval time has elapsed and the interval time is reset to its initial value. During the standby time the connecting lines must be rinsed. Synchronizing: When valve D or E closes, the purging time starts and the interval time is reset to its initial value. -
Page 5: Lv (Low Voltage) Directive And Emc (Electromagnetic Compatibility)
For details on the conformity of our equipment according to the European Directives see our Declara- tion of Conformity or our Declaration of Manufacturer. The current Declaration of Conformity / Declaration of Manufacturer are available in the Internet under www.gestra.com/documents or can be requested from us. -
Page 6: Technical Data
Technical data SRL 6-50 Supply: Supply voltage 24 VDC +/– 20 %, 0.1 A Fuse External 0.5 A (semi-delay), without external wiring (indicators) Power consumption 4 VA Inputs: Wiring of limit switches, level switches NRS 1-50, NRS 1-51 5 volt-free contacts of the limit switches of the valves... -
Page 7: Scope Of Supply
Technical Data - continued - SRL 6-50 Protection class 2 (completely insulated) Protection IP 65 to EN 60529 Weight approx. 1.3 kg Further conditions: Ambient temperature when system is switched on: 0 °C ... 55 °C, during operation: –10 °C ... 55 °C Transport temperature –20 °C ... -
Page 8: In The System: Installing The Logic Unit
Indicator and adjustor pad Lid for terminal block Start LED, green (stand-by time) Cover screws Installing logic unit SRL 6-50 The enclosure of the logic unit is designed for wall mounting and should be installed close to the external level pot. -
Page 9: Name Plate / Marking
In the system: Installing the logic unit - continued - Name plate / marking Safety note Type designation Supply voltage SRL 6-50 Power consumption 24 V DC Ambient temperature Protection IP 65 Tamb = 55 °C ( 131°F) Standby time:... -
Page 10: In The System: Wiring The Logic Unit
In the system: Wiring the logic unit Wiring diagram for logic unit SRL 6-50 1 2 3 4 5 6 7 8 5 6 7 8 9 10 11 12 13 14 2 3 4 5 6 7 8 Valve D OPEN... -
Page 11: Key
External indication of standby time (Start), 24 DC 1A Level switch NRS 1-50, NRS 1-51, connection: first standby input and first signal output Second logic unit SRL 6-50 Level switch NRS 1-50, connection: second standby input and second signal output... -
Page 12: Tools
In the system: Wiring the logic unit - continued - Danger For the supply of the logic unit SRL 6-50 with 24 V DC use a safety extra-low voltage (SELV) power supply unit that must be electrically isolated from dangerous contact voltages and must meet at least the requirements on double or reinforced isolation acc. -
Page 13: Wiring Terminal Strip
Basic Settings Factory settings Logic unit SRL 6-50 The logic unit features the following factory set default values: Interval time: 24 hours Standby time: 1 hour Purging time (SRL 6-50): 5:10 minutes ... -
Page 14: Start, Operation, Alarm And Test
Start, Operation, Alarm and Test SRL 6-50 Service Start LED, green (standby time) Purging Start Display & Val D OPEN: adjustor pad Val E CLOSED: Standby LED, amber Val F CLOSED: (purging time) Standby Stop LED, red SRL 6 - 5 0... - Page 15 Start, Operation and Alarm - continued - SRL 6-50 - continued - Note When operating the valves Fig. 7 follow the sequence schedule indicated in the display & adjustor pad. The individual steps are listed in chronological order. Sequence schedule for purging...
- Page 16 Start, Operation and Alarm - continued - SRL 6-50 - continued - Service Start LED, green (standby time) Purging Start Display & Val D OPEN: adjustor pad Val E CLOSED: Standby LED, amber Val F CLOSED: (purging time) Standby Stop LED, red...
- Page 17 Start, Operation and Alarm - continued - SRL 6-50 - continued - Changing the standby time Action Indicator & ajdustor pad Function To enter the standby time press and hold button until the input line is highlighted. Standby time The input mask appears...
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Page 18: Srl 6-50
Start, Operation and Alarm - continued - SRL 6-50 - continued - Attention It is not permitted to purge two measuring pots (including the connecting lines) at the same time. If standby inputs 1 and 2 of the level switch are activated at the same time, the level switch will open the safety circuit. -
Page 19: Troubleshooting
Troubleshooting Indication, diagnosis & remedy Possible operating errors Position of Indicator & adjustor Error LED indication* Remedy valves Operating Standby LED not position illuminated, Purging time Valve D OPEN Stop LED illuminated Initiate purging during elapsed without Valve E OPEN for approx. -
Page 20: Replacing And Disposing Of The Logic Unit
Troubleshooting - continued - Indication, diagnosis & remedy - continued - Fault in program sequence, safety circuit in level switch interrupted Error Remedy Display & adjustor pad signals “Limit switch defective”. Replace defective limit switch. Failure of voltage supply during purging time, standby input deactivated and safety circuit interrupted Apply supply voltage, continue purging process. - Page 21 For your Notes...
- Page 22 For your Notes...
- Page 23 For your Notes...
- Page 24 Agencies all over the world: www.gestra.de GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon +49 421 3503-0 Telefax +49 421 3503-393 E-mail info@de.gestra.com www.gestra.de 819117-04/06-2016cm (808851-05) · GESTRA AG · Bremen · Printed in Germany...
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