APPLICATION
The RA890F Protectorelay™ Primary Control is a nonprogramming, amplifying relay that provides solid state electronic flame safeguard protection for industrial and commercial gas, oil, or combination gas-oil burners.
FEATURES
• Employs rectification principle of electronic flame detection using a flame rod, rectifying photocell, or C7012A,C Ultraviolet Flame Detector.
• Clipping pilot link jumper wire permits use with standing pilots.
• Can directly replace RA890E and mount on same Q270A Subbase.
• Solid state circuitry eliminates vacuum tube replacement and increases resistance to vibration. Power application not required during Off cycle; no tube to warm up before starting.
• Push-to-reset safety switch in dust-resistant enclosure.
• Built-in protection against ignition crossover in flame rod systems.
• Does not start if flame-simulating failure occurs in flame detector circuit.
• Automatic safety shutdown if flame fails on start, or if flame not re-established after flame failure.
• Flame signal current is directly measurable at test jack.
• Line or 24 volt, automatic or manual controller can be used. (Manual controller must open circuit on either power or flame failure.)
• Captive mounting screws allow easy mounting and removal. Thermoplastic mounting base.
• Optional alarm circuit indicates safety shutdown.
SPECIFICATION
TRADELINE® Models
TRADELINE® models of this device are available. They are selected and packaged to provide ease of stocking, ease of handling, and maximum replacement value. TRADELINE® model specifications are the same as those of the standard model except as noted below.
TRADELINE® Models Available:
RA890F for 120V, 50/60 Hz power supply.
RA890F for 240V, 50/60 Hz power supply.
Additional Features:
TRADELINE® packed with cross reference label and special
cross reference listing.
STANDARD MODELS
Model: RA890F Protectorelay™ Primary Control.
Electrical Ratings:
Voltage and Frequency:
100V, 120V, 208V, 220V, or 240V, 50/60 Hz. As ordered.
Power Consumption:
60 Hz: 7.0W maximum, 1.7W standby.
50 Hz: 8.5W maximum, 3.0W standby.
VA Ratings:
60 Hz: 13.0 VA maximum, 8.3 VA standby.
50 Hz: 17.0 VA maximum, 13.6 VA standby
Terminal Ratings:
| Terminal |
Electrical Load |
120
Vac |
240
Vac |
|
| 3 |
Burner
Motor |
Full Load |
5.2A |
2.6A |
Locked
Rotor
(inrush) |
31.2A |
15.6A |
|
| Ignitiona,b |
3.0A |
1.5A |
| Pilot Fuel Valve |
25VA |
25VA |
| 4 |
Ignitiona |
3.0A |
1.5A |
| 5 |
Gas Valveb |
125VA |
125VA |
a If ignition and motor are connected to terminal 3, terminal 4 cannot be used. This is to prevent overloading relay 1K. b Alternate Rating: 25 VA pilot duty plus one or more motorized valves with total rating 400 VA opening, 200 VA holding.
Alarm Contacts: 3.0A at 24 Vac or 1.0A at 120 Vac in suitable wiring enclosure.
Low Voltage Control Circuit (T-T): 0.3A.
NOTE: Allowable inrush can be up to ten times the pilot duty rating.
EXAMPLE: Pilot duty rating = 25 VA.
At 120V, running current is 25 = 0.21A.
Maximum allowable inrush is 10 times 0.21 = 2.1A.
Maximum Power Interruption: 12 milliseconds; longer interruption causes 1K to drop out; burner shuts down. After a short delay for component check, burner should restart and operate normally
Flame Failure Response Time:
0.8 seconds or 3 seconds nominal, as ordered. Three second response is recommended for nonrecycling ignition cutoff service to prevent nuisance shutdowns.
Flame Detectors:
Flame rod, rectifying photocell, or C7012A,C Ultraviolet Flame
Detector.
Ambient Temperature Ratings:
Minimum:
| Model |
°F |
°C |
| 15 sec safety switch |
-20 |
-29 |
| 30 sec safety switch |
+10 |
-12 |
Maximum:
| Model |
50 Hz |
60 Hz |
| °F |
°C |
°F |
°C |
| Without alarm contacts |
115 |
46 |
125 |
52 |
| With alarm contacts |
105 |
41 |
115 |
46 |
Models with 30 second safety switch operate safely at temperatures to -30°F (-34°C) but may encounter difficulty when resetting a tripped safety switch below the rated temperature.
Safety Switch Timing (Lockout Period):
15 or 30 seconds as ordered. Timings are proportional with input voltages and temperatures. For RA890s that are classified in Underwriters Laboratories Inc gas groups 6 and 6A and oil group 8, the maximum safety switch timing with voltages ranging from 70 to 110 percent of rated voltage and with ambients ranging from 32°F (0°C) to 115°F (66°C) is allowed to be as high as 50 seconds.
Flame Establishing Period:
Models with 15 sec Safety Switch: Up to 15 sec.
Models with 30 sec Safety Switch: Up to 30 sec.
Recycle Time:
Occurs immediately when flame loss recognized. See Flame Failure Response Time.
Thermistor Delay of Load Relay Pull-In:
4 seconds nominal. Voltage level and ambient temperature affects delay time. Actual delay may be 2 to 30 seconds under ambient temperature extremes. Fast thermistor model with 1 sec nominal delay time is available when long delay is a problem. Fast delay model is available only with the following specifications: 120V, 50/60 Hz, 15 sec safety switch, 0.8 flame response timing, for use with flame rod detector only.
Alarm Contacts (Optional):
Isolated spdt contacts. Male quick-connect terminals (female quick-connects included). See rating above.
Dimensions:
Approximately 5 x 5 x 5 in. (127 x 127 x 127 mm) including subbase.
Mounting:
On Q270A Universal Mounting Base ordered separately.
Approvals:
Underwriters Laboratories Inc Listed: 120V, models only; File No. MP268, Guide No. MCCZ.
NOTE: All devices meeting UL components recognition have the following symbol:
Replacement exchange controls that meet current UL requirements are identified with the term REMFR'D following the listing or component recognition mark.
Canadian Standards Association Certified: 120V models only; File No. LR1620.
Factory Mutual Approved: Report No. 17678, 19417, and 19784.
American Gas Association Design Certified for -20°F (-29°C): Certificate No. 20-AL.
https://bnsens.en.made-in-china.com/product-group/bopTdXVcfIWz/Gas-Sensor-and-Flame-Detector-catalog-1.html?pv_id=1ii6duvlr5aa&faw_id=1ii6e5nca71b
BNSENS (Nanjing) Sensor Technology Co., Ltd. is located in Nanjing, China. It is a high-tech enterprise specializing in the development, manufacturing and trade of sensor products. The company has brought together a group of outstanding technical experts in various fields such as automation, electronics, machinery and computers. All employees of the company have college degrees or above. It adopts the world-class management and operation model and 6 sigma quality system. At present, the company's main products are pressure, liquid level, flow, current, switches, etc. The company's users are all over the country, and some products have been exported to Japan, South Korea and Southeast Asia.
Since its inception, the company has been based on the technical accumulation and management standards of American sensor giants. It is composed of senior engineers and managers who have served in multinational companies for many years, and has rapidly developed various pressure sensors, transmitters, liquid level, flow meters, pressure switches, digital meters, current sensors, proximity switches and other products. After years of unremitting efforts, it has become one of the leading suppliers in the domestic automation industry. Our pressure transmitters can achieve an accuracy of more than 3/10, 000. The products have been widely used in oil, natural gas, electricity, chemical industry, metallurgy, building materials, food, light industry, environmental protection, aerospace, tap water, municipal and other industries.
It is a sensor science and technology innovation company that masters the core technology of MEMS chips. The company has a research and development center in Minnesota, USA. The leader is Dr. Pan Hanjin, a famous scientist in the sensor industry. Dr. Pan Hanjin has been deeply involved in the sensor industry for more than 20 years and is an expert in the sensor industry.
The company has a number of ASIC chips independently developed, which are widely used in industrial, automotive, home appliance and other markets.
BNSENS (Nanjing) Sensing Technology Co., Ltd. is a strategic partner of Honeywell in China. The two parties proposed a plan of East serving East and jointly developed several sensors specifically for the Chinese market. These sensors will be widely used in intelligent manufacturing, Internet of Things, artificial intelligence, and smart home fields. These sensors include: Magnetic sensors, temperature sensors, humidity sensors, force sensors, fire water pressure sensors, equipment vibration sensors, human body status monitoring sensors, motion sensors, etc.
History of BNSENS Company:
BNSENS is a company focusing on sensors, instruments, and electronic components. We are a young company, founded in 1999, just 25 years old, and we are still growing.
1999: The company's first pressure sensor was launched, mainly for the petroleum and petrochemical industries.
2002: The company expanded its product line and launched temperature sensors
2005: Started producing high-precision pressure sensors for the test and measurement market
2006: Became an official authorized agent of Honeywell
2009: Introduced the Six Sigma management system, and the product qualification rate was greatly improved
2010: Became a supplier of Emerson
2011: We started selling SICK sensors
2014: Introduced the sensor production line from Germany, developed more industrial control sensors, and cooperated with TSMC
2015: Cooperated with Siemens in Vietnam
2017: The factory moved to Nanjing High-tech Zone
2019: Became a national high-tech enterprise in China
2023: We started selling products from Infineon and Rohm
BNSENS, The Future Starts Here.
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