Hach CD500 User Manual
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Figure 6 Connect to DC powerTable 4 DC wiring informationPin Connection Typical color1 VIN1, 12–24 VDC (+) Red2 VIN1, 12 VDC return (–) Black3 VIN2, 12–24 VDC (+) Red4 VIN2, 12 VDC return (–) Black5 PE (Protective Earth) GreenConnect the relaysD A N G E RElectrocution hazard. Do not mix high and low voltage. Make sure that the relay connections are allhigh voltage AC or all low voltage AC.W A R N I N GFire hazard. Relay loads must be resistive. Always limit current to the relays with an external fuse orbreaker. Obey the relay ratings in the Specifications section.Use the relay connections to start or stop an external device such as an alarm. Use wire that is ratedfor 300 V. Use a minimum wire gauge of 18 AWG. Make sure to obey the relay connectionrequirements in Specifications on page 3. Make sure to have a second switch available to removepower from the relays locally if there is an emergency or for maintenance.1. Remove the power to the instrument.2. Open the controller cover. Refer to Open the controller cover on page 10.English 13 |
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