Honeywell SN0500 User's Manual
Contents
1. period the red yellow LED activates indicating the high low level relay has switched then the reset button see Fig 1 on the sensor must be pushed if in latched position after normalisation is complete ov Earth T So RV3 Con1 ev 4 20mA 010V j wra OM hie j A 1 j i Cons s ooo o Gons Address 12H an i 3 1 S2 2 f 7 Reset O cle Relay2 JNO BNC i JP3 l seoecesses J j 5 Relay 1 p NC nO 9 JP4 i J 3 e o PIC Con6 ine jp4 Wm Ea Latched Normal sa JP7 z SS jp Cmm m Tekne position 1 Ut a in rs a G l L position 1 position 2 z S pans n p pe Figure 1 External Connections 3 EN1B 0014UK07 R0404 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE 3 POWER SUPPLY The Power supply is connected at Con 1 see Fig 1 Green LED on shows power connected Pin 1 OV Pin 2 12 to 24 VAC or 12 to 30VDC Pin 3 Earth The OV pin 1 on the power supply terminal block CON 1 can withstand 50V AC or DC with respect to the OV Pin 1 on the output terminal block CON 3 If this is likely to be exceeded use an isolated power supply On the power supply side 12V is the minimum voltage at the terminals Power consumption is 4W max It can draw 0 33Amp at 12V so voltage drop along the supply cable should be considered when selecting supply cable type and length For example for cable resistance 100hm 1002. CON3 3 Analogue Output 0 10V load resistance gt 1000 CON3 4 Analogue Output 0 5V load resistance gt 10KQ CON4 1 Plug in detection sensor module CON4 2 Plug in detection sensor module CON4 3 Plug in detection sensor module CON4 4 Plug in detection sensor module CON4 5 Plug in detection sensor module CON4 6 Plug in detection sensor module CON5 1 RS485 Communication A CON5 2 RS485 Communication B CONS 3 RS485 Communication Screen CON6 1 NO relay contact CON6 2 NO relay contact CON7 1 NO relay contact CON7 NO relay contact EN1B 0014UK07 R0404 Automation amp Control Solutions Refrigeration Control Newhouse Industrial Estate Motherwell Lanarkshire ML1 5SB Phone 44 01698 481698 Fax 44 01698 481699 www honeywell com refrigeration Subject to change without notice EN1B 0014UK07 R1204 Honeywell
3. Honeywell SIN0500 SNOSOL REFRIGERANT GAS LEAK DETECTOR INSTALLATION USER GUIDE PR ere eee f f Copyright 2004 Honeywell Control Systems Ltd All Rights Reserved EN1B 0014UK07 R0404 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE CONTENTS ASIN FRODUG BIO Nii cictstisteintdassanentantonatsinehanesdacheinaduetaivadesacdwatasSasendanaduaeaneuseadeneaadaets 3 2 EXTERNAL CONNECTIONS cciecccisctecciscsteccisceiassdecedesnsiciacedtcndesntisnduwosivedeandiaeserese 3 3 POWER SUPPLY iscsi cevesssiweite cassseie coverese ees canstentenevenetwunvennseatwenesaventusverseenieunsnameuewes 4 4 ANALOGUE OUTPUTS areenan anemii mnanaa aran ebinusdtedtenainuaanseiputinsuodutinamigubinaautwnindady 4 5 RELAY CONTACTS iccascateccansuananavscansccndeaeiaateutusnansutesaansutacaassudasosudvavdueududusuundeausncnl 5 6 GAS DETECTION RANGE sisstessisestesctcsiensatcesacsntacttessancitesnactteussansiauenecstansateeiaeenawed 5 7 STANDARD DEFAULT SETTINGS wascsisiccitsisccincrisiuencstsartecvaccrtacuisentndvascstedvencvindeds 6 8 CONNECTIONS AT A GLANGE sioiiscissccseatascupectansateatavenses dacnuaadecmenununsecauataanoweeiaute 7 At the time of writing this User Guide accurately describes the product However in the course of development of our products we may make changes without notification Honeywell shall not be liable for errors or for incidental or consequential damages directly or indirectly in connection with t
4. he furnishing performance or misuse of this product or document All Installation and Commissioning work on Honeywell equipment should be carried out by suitably qualified personnel only Normal safety precautions and good working practice should be observed to prevent damage or injury at all times We welcome comments about our products and documentation Contact us at Address on back cover of this guide EN1B 0014UK07 R0404 2 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE L INTRODUCTION The Honeywell Refrigerant Gas Detection sensors SN0500 for refrigerant R404a and SN0501 for refrigerant R410 are used to detect the leakage of refrigerant gas and notify a monitoring system or provide a local indication i e audible or visual signal Remedial action can then be taken to stop and replace the lost gas 2 EXTERNAL CONNECTIONS All external connections are made to the motherboard through a cable gland A cable tie should be fitted within 20mm of the cable gland inside the enclosure The connectors will accept wire of 0 5 1 5mm sq Note Earth connection must be made when using the vented metal enclosure or Exd enclosure The safety of this equipment is dependent on the integrity of the power supply and the earthing of the enclosure On power up the sensor may take some time minutes up to hours to fully normalize You can monitor this by checking the 0 10V output as it falls towards zero If during this normalisation
5. ings Gas R404a R410 0 100 ppm 0 1000 PPM 5 EN1B 0014UK07 R0404 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE 7 STANDARD DEFAULT SETTINGS Relay 1 Low level relay set at 500 PPM NO Auto reset mode Relay 2 High level relay set at 900 PPM NO Auto reset mode Delays on both alarm outputs are 0 minutes no delay CON 1 Power Supply input Power on indicated by Green LED Supply voltages to be either 12V to 24V AC or 12 to 30V DC Power consumption is 4W max at 12V The connectors will accept wire of 0 5 1 5mm Refer to Section 3 for maximum cable run CON 2 Not Used CON 3 Analogue Output Pin 1 OV Pin 2 4 20mA Load resistance lt 400Q0 Pin 3 0 10V Load resistance gt 1000 Pin 4 0 5V Load resistance gt 10KQO CON 4 Plug in detection sensor CON 5 Not Used CON 6 Relay 1 contacts 1Amp 24V AC DC Low level alarm Indicated by Yellow LED Normally closed when JP4 link inserted JP3 link removed as shown on Fig 1 Normally open when JP3 link inserted JP4 link removed as shown on Fig 1 Latching manual reset by push button located next to CON 7 Not Latching set by JP8 see Fig 1 in Connection Instructions Alarm Threshold level set by RV7 and can be set by putting a meter between TPO negative and TP2 positive and adjusting RV1 scale is 0 to 5V e g 2 5V is 50 of scale Delayed response time set by JP7 link see Fig 1 in External Connections Position 1 No delay Position 3 5 min Posi
6. m allowing for the flow and return total cable resistance for 100m is 200hm and voltage drop along the cable is 6 6V Minimum DC supply then should be 19V If you need to use a cable of greater diameter that 1 5 mm sq you can use a terminal block at each sensor position capable of taking the larger cable and connect from that into the CON1 terminal block using 1mm sq wire Alternatively use local power supplies to reduce cable runs and voltage loss 4 ANALOGUE OUTPUTS Analogue Outputs which indicate the concentration of gas refrigerant in the air are at Con 3 see Figure 1 A two core communication cable should be used to connect the outputs to a monitoring and control system a screen is not required Pin 1 OV Pin 2 4 20mA Load resistance must be less than 4000 Pin 3 0 10V Load resistance must be greater than 1000 Pin 4 0 5 V Load resistance must be greater than 10KO When connecting the 4 20mA to the control panel we suggest using Belden 8761 22awg single pair shielded or alternatively an alarm type cable of 7 0 2mm 22awg EN1B 0014UK07 R0404 4 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE 5 RELAY CONTACTS Note If changing any jumper power must be removed There are two relays rated up to 1 Amp at 24V DC AC The status of the relays is jumper selectable Relay 1 at Con 6 Low level alarm Yellow LED on when in alarm Normally closed when JP4 link inserted JP3 link removed as shown on Fig 1 Nor
7. mally open when JP3 link inserted JP4 link removed as shown on Fig 1 Latching manual reset by push button located next to CON 7 Not latching automatic reset set by JP8 see Fig 1 for link position Alarm threshold level is set by pot RV1 and can be set by putting a meter between TPO negative and TP2 positive below RV1 and adjusting RV1 scale is 0 to 5V e g 2 5V is 50 of scale Delayed response time is set at JP1 by inserting the link in the required position Default settings are Position 1 No delay Position 2 1 Minute Position 3 5 Minutes Position 4 10 Minutes Note If changing any jumper power must be removed Relay 2 at Con 7 High level alarm Red LED on when in alarm Normally open closed when JP5 link inserted as shown on Fig 1 Latching manual reset by push button located next to CON 7 Not latching automatic reset set by JP7 see Fig 1 for link position Alarm threshold level is set by pot RV2 and can be set by putting a meter between TPO negative and TP3 positive below RV2 and adjusting RV2 scale is 0 to 5V e g 2 5V is 50 of scale Delayed response time is set at JP2 by inserting the link in the required position Position 1 No delay Position 2 1 Minute Position 3 5 Minutes Position 4 10 Minutes Note If changing any jumper power must be removed 6 GAS DETECTION RANGE Gas Detection Range and default settings vary with model and set up see below for sample sett
8. tion 2 1 min Position 4 10 min CON 7 Relay 2 contacts 1Amp 24V AC DC High level alarm Indicated by Red LED on Normally open closed when JP5 link inserted as shown on Fig 1 Latching manual reset by push button located next to CON 7 Not Latching set by JP7 as above Alarm threshold level set by RV2 and can be set by putting a meter between TPO negative and TP3 positive and adjusting RV2 scale is 0 to 5V e g 2 5V is 50 of scale Delayed response time is set by JP2 link see Fig 1 in External Connections Position 1 No delay Position 3 5 min Position 2 1 min Position 4 10 min If changing any jumper power must be removed EN1B 0014UK07 R0404 6 GAS LEAK DETECTOR INSTALLATION amp USER GUIDE amp CONNECTIONS AT A GLANCE Connector Pin Description CON1 1 OV Supply Voltage CON1 2 24V Supply Voltage CON1 3 Earth CON2 1 Display Connection not used CON2 2 Display Connection not used CON2 3 Display Connection not used CON2 4 Display Connection not used CON2 5 Display Connection not used CON2 6 Display Connection not used CON2 7 Display Connection not used CON2 8 Display Connection not used CON2 9 Display Connection not used CON2 10 Display Connection not used CON3 1 Analogue Output OV CON3 2 Analogue Output 4 20mA load resistance lt 4000
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