Related Manuals for nVent RAYCHEM 460
Summary of Contents for nVent RAYCHEM 460
- Page 1 460 Controller for Pipe Trace Heating Systems INSTALLATION, OPERATION AND MAINTENANCE MANUAL...
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Page 2: Table Of Contents
2.5.2 Temperature Sensor and Extension Cables ... 9 2.6 Alarm Relay Connections ............... 10 2.7 Initializing the Controller ................. 11 2.7.1 Initial Heating Cable Test ........11 460 Controller Operation ..............12 3.1 Quickstart ....................12 3.2 Settings Menu ..................14 3.3 System Menu..................14 3.3.1 Info ................ - Page 3 3.5 General Settings Menu ................19 3.5.1 Language .............. 20 3.5.2 Country ..............20 3.5.3 Date ............... 20 3.5.4 Time ..............20 3.5.5. Voltage ..............20 3.5.6 Select Unit of Measure .......... 20 3.5.7 Alarm Buzzer ............20 3.5.8 Time Format ............20 3.6 Alarm Events ..................
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Page 4: Overview
Each unit is a single point controller with a 5" inch color touch screen display for intuitive set up and programming right out of the box. The 460 controller may be used with line- sensing or ambient-sensing and proportional ambient-sensing control (PASC) modes. It measures temperatures with two 2 KOhm / 77°F (25°C), 2-wire Thermistor connected... -
Page 5: Product Ratings
Thermal Management from another country. nVent Thermal Management warrants that the software and firmware designated by nVent Thermal Management for use with the 460 controller will execute its programming instructions properly. nVent Thermal Management does not warrant that the operation of the hardware, or software, or firmware will be uninterrupted or error-free. - Page 6 Enclosure Protection TYPE 12 Materials Polycarbonate Ambient operating temperature 32°F to 105°F (0°C to 40°C) range Ambient storage temperature –4°F to 122°F (–20°C to 50°C) range Relative humidity 0% to 95%, noncondensing Control Relay type Single pole single throw Voltage, maximum 277 V nominal, 50/60 Hz Switching current, maximum 24 A @ 105°F (40°C)
- Page 7 Enclosure Mounting DIN Rail 35 mm (Indoor only) *Note: The 460 controller can't monitor the load current and ground fault current in each cable segment when an external contactor is used. These alarm conditions are disabled when external contactor is used.
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Page 8: Installation And Wiring
This section includes information regarding the initial inspection, preparation for use, and storage instructions for the 460 controller. Note: If the 460 controller is used in a manner not specified by nVent Thermal Management, the protection provided by the controller may be impaired. -
Page 9: Wiring
National Electrical Code and Part I of the Canadian Electrical Code. 2.5.1 Power and Load Connections The 460 controller may be powered directly from a 120 V to 277 V supply. All of the power terminals are labeled for easy identification. Do not attempt to use wire sizes that exceed the marked terminal ratings and avoid terminating two wires on the same terminal whenever possible. -
Page 10: Temperature Sensor And Extension Cables
Figure 2.3 – Heating Cable Connection 2.5.2 Temperature Sensor and Extension Cables The 460 controller has two (2) temperature sensor inputs. Use only 2-wire Thermistor 2 KOhm / 77°F (25°C) sensors provided. Sensor 1 should be connected to terminals S1 ┴... -
Page 11: Alarm Relay Connections
Figure 2.4 – Temperature Sensor Wiring 2.6 ALARM RELAY CONNECTIONS The 460 controller includes terminals for one alarm relay as shown in figure 2.5. It can support both AC and DC power source (please refer to the max voltage and current specifications for the relay above). -
Page 12: Initializing The Controller
Alarm Relay Terminals Alarm Indicator Figure 2.5 – Alarm Wiring After all connections are made, connect the network cable from the touchscreen to the port on the controller as shown below: Figure 2.6 – Connect the touchscreen cable to the controller. Close the lid with screwdriver and turn on the circuit breaker for the circuit. -
Page 13: 460 Controller Operation
A connection of the unit to an external contactor needs to be confirmed by the user. WARNING: The 460 controller can't monitor the load current and ground fault current in each cable segment when an external contactor is used. - Page 14 Default: 110°F (43°C) Start Test The test program runs for 30 minutes, during Program which all parameters will be ignored to check heating cable and connection on site. You can stop the test program at any time. Key Lock Key lock gets activated after the quick start process.
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Page 15: Settings Menu
3.2 SETTINGS MENU Figure 3.2 – Settings Menu The settings menu has three sections: The System section allows you to read system information, run test program, select Autocyle test interval, service the system such as upgrade the firmware, export event log/energy consumption/temperatures or calibrate the screen, read status of the heat tracing circuit, enable key lock, assign device ID and reset the system to factory settings. -
Page 16: Info
Figure 3.3 – System Menu 3.3.1 Info Purpose General info about the unit, name, commissioning date, firmware version, nVent Thermal Management contact info per country. 3.3.2 Test Program Purpose The test program runs for 30 minutes, during which all parameters will be ignored to check the heating cable and the connection on site. -
Page 17: Status
Select Power Adjustment: For Proportional Ambient Sensing Control (PASC), Power Adjustment Factor can be selected. The Range is from 10% to 200%. Default is 100%. 3.3.5 Status Purpose Displays the status and parameters for the heat tracing circuit. Displays information such as sensor 1 and sensor 2 temperatures, duty cycle, control mode, load current, GFP current and if the external contactor is connected. -
Page 18: Sensor Setup
Figure 3.5 below: Figure 3.5 – Sensor Setup The 460 controller allows for two temperature sensors. Assign each sensor to be a line or ambient sensor. If both the sensors are assigned as line or ambient sensors, the controller will control based on the lower measured temperature of the two sensors. -
Page 19: Setpoint
Setting Ambient On/Off Mode: Ambient sensor measures the ambient temperature. If the ambient temperature is above the setpoint temperature plus deadband, the relay output is turned off. If the ambient temperature is below the setpoint temperature, the output is turned on. Line Mode: Line sensor measures the line temperature. -
Page 20: High Temperature Alarm
3.4.9 High Temperature Alarm Purpose This allows the user to select the low temperature alarm for both the sensors Setting/Range 32ºF to 190ºF (0ºC to 88ºC) Factory Default 110ºF (43ºC) 3.4.10 High Limit Cutout Temperature, Setpoint Purpose Set high limit cutout temperature for the selected Sensor (in the sensor set-up). -
Page 21: Language
Figure 3.6 – General Settings Menu 3.4.1 Language Select English or French 3.4.2 Country Select USA or Canada 3.5.3 Date Use the up/down arrow keys to select the year, month and day 3.5.4 Time Use the up/down arrow keys to set the hour and minute 3.5.5. -
Page 22: Error Codes
3.4.4 Error Codes The following are the error codes for different condition and their description. Error Label Description E:1.1 SENSOR1_OPEN Sensor 1 open E:1.2 SENSOR1_SHORT Sensor 1 shorted E:1.3 SENSOR2_OPEN Sensor 2 open E:1.4 SENSOR2_SHORT Sensor 2 shorted E:2.1 SENSOR1_TEMP_HIGH High temperature alarm Sensor 1 E:2.2 SENSOR2_TEMP_HIGH... -
Page 23: Troubleshooting
TROUBLESHOOTING The 460 controller may be used as an effective troubleshooting tool to pinpoint problem areas of heating cable circuits. Described below are a few of the more common problem areas, their symptoms, and parameters to check to determine the actual faulty portion of the heating cable circuit. - Page 24 Symptom/Alarm Probable Cause Corrective Action Condition Low temperature Temperature setting Decrease setting. too close to maintain temperature. Heating cable not sized Refer to the appropriate heating cable properly for the design guide for correct product selection. application. Damaged, wet, or Replace or install correct thermal missing thermal insulation.
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Page 25: Appendix A: Proportional Ambient Sensing Control (Pasc)
The 460 controller has a control algorithm that uses the measured ambient temperature, desired maintain temperature, minimum ambient temperature assumption used during design, and size of the smallest pipe diameter to calculate how long the heating cable should be on or off to maintain a near-constant pipe temperature. - Page 26 North America Tel +1.800.545.6258 Fax +1.800.527.5703 thermal.info@nvent.com nVent.com/RAYCHEM ©2020 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without notice. RAYCHEM-IM-H60791-460Controller-EN-2007 nVent.com/RAYCHEM | 25...
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