background image

R7824, R7847, R7848, R7849, R7851, R7852, R7861, R7886 AMPLIFIERS FOR 7800 SERIES AND R7140 RELAY MODULES

5

65-0109—14

CAUTION

Equipment Damage Hazard.

Incorrect combination of relay module, amplifier 

and flame detector can cause equipment damage.

In infrared applications (C7015 Infrared Flame Detector 

and R7848 Amplifier) using the RM7890 Relay Module 

with software version 4004 or less requires a ten-

second delay to start sequence. This applies only to the 

initial power of the RM7890.

INSTALLATION

When Installing this Product...

1.

Read these instructions carefully. Failure to follow them 

could damage the product or cause a hazardous condition.

2.

Check the ratings given in the instructions and on the 

product to make sure the product is suitable for your 

application.

3.

Installer must be a trained, experienced, flame safeguard 

control technician.

4.

After installation is complete, check out the product oper-

ation as provided in these instructions.

WARNING

Electric Shock Hazard.

Can cause electrical shock, serious injury or death.

Disconnect the power supply before beginning 

installation. More than one power supply disconnection 

can be involved.

IMPORTANT

1. Wiring must comply with all applicable codes, ordi-

nances and regulations

2. Wiring (where required) must comply with NEC Class 

1 (Line Voltage) wiring.

3. Perform all required checkout tests after installation is 

complete. 

CAUTION

Equipment Damage Hazard.

Can cause equipment damage.

Disconnect 7800 SERIES and R7140 Relay Module 

power before removing amplifier.

Installing Plug-In Flame
Signal Amplifier (Fig. 2)

WARNING

Electric Shock Hazard.

Can cause severe injury, death or property damage.

Disconnect the power supply before beginning 

installation. More than one power supply disconnection 

can be involved.

1.

Align the amplifier circuit board edge connector with the 

keyed receptacle on the 7800 SERIES and R7140 Relay 

Module. Be sure the amplifier nameplate faces away 

from the Relay Module. 

2.

Push in the amplifier until the circuit board is fully 

inserted into the receptacle and then push the amplifier 

toward the 7800 SERIES and R7140 Relay Module 

retaining clasp. 

3.

Be sure the amplifier is firmly in place.

4.

Perform all required checkout tests. 

Installing Flame Detector

NOTE: Table 2 lists flame detection systems available for use 

with 7800 SERIES and R7140 Relay Modules. Be 

sure to use the correct combination of amplifier and 

flame detector.

Proper flame detector installation is the basis of a safe and 

reliable flame safeguard installation. Refer to the Instructions 

packed with the flame detector and the equipment 

manufacturer instructions. 

Keep the flame signal leadwires as short as possible from the 

flame detector to the wiring subbase. Capacitance increases 

with leadwire length, reducing the signal strength. The 

maximum permissible leadwire length depends on the type of 

flame detector, leadwire and conduit. However, the ultimate 

limiting factor for the flame detector leadwire is the flame 

signal; see Table 3 in the Checkout section.

Fig. 2.  Installing flame signal amplifier.

Wiring

WARNING

Electrical Shock Hazard.

Can cause severe injury, death or property damage.

Disconnect power supply before beginning installation. 

More than one disconnection can be involved. 

5.

Remove the 7800 SERIES and R7140 Relay Module 

from the wiring subbase. 

6.

Refer to Fig. 3 for proper flame detector wiring. 

Содержание R7824

Страница 1: ...40 Relay Modules The R7849A B Ultraviolet Flame Amplifiers are solid state plug in amplifiers that respond to an ultraviolet signal from a C7027 C7035 or C7044 Ultraviolet Flame Detector to indicate the presence of flame when used with 7800 SERIES and R7140 Relay Modules The R7851B Optical Flame Amplifiers are solid state plug in amplifiers that respond to optical signals from C7927 and C7962 Flam...

Страница 2: ...n the amplifier and relay module selected See Table 1 Plug in to 7800 SERIES and R7140 Relay Module through printed circuit board edge connector keyed for proper orientation Flame signal test jacks measure amplifier flame signal voltage 0 0 to 5 0 Vdc Flame signal strength reading range Color coded label identifies flame detection type Green rectification Red infrared Purple ultraviolet Blue pulse...

Страница 3: ...able The Amplifiers R7847B C R7861A R7886 R7851C or R7852B used with the appropriate flame detector and used in Relay Module EC7810A 20A 30A 40L 50A RM7800 E G L M 30A 38 A B C 40 E G L M 50A 90 A B C D 97 A C 98A is SIL 3 Capable in a properly designed Safety Instrumented System See form number 65 0312 for Certificate Agreement Approvals Underwriters Laboratories Inc Listed File no MP268 Guide no...

Страница 4: ... and R7847C Series 4 or greater pulse the shutter when signal of 1 5 Vdc is sensed Display readings of 0 7 to 2 4 Vdc are common i Order flame rod separately see flame detector Instructions for holder Plug in Flame Signal Amplifiers Applicable Flame Detectors Type Color Self Checking Model Flame Failure Response Time sec a Fuel Type Models Rectification Green Dymanic Self Check R7824Cb c h 3 Gas o...

Страница 5: ...Shock Hazard Can cause severe injury death or property damage Disconnect the power supply before beginning installation More than one power supply disconnection can be involved 1 Align the amplifier circuit board edge connector with the keyed receptacle on the 7800 SERIES and R7140 Relay Module Be sure the amplifier nameplate faces away from the Relay Module 2 Push in the amplifier until the circu...

Страница 6: ...AGE FLAME DETECTOR LEADS ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE WHITE MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS POLARITY SENSITIVE FLAME DETECTOR LEADS ARE COLOR CODED THE BLUE LEAD MUST BE CONNECTED TO THE F TERMINAL AND THE YELLOW MUST BE CONNECTED TO THE G TERMINAL THE UV SENSING TUBE IS POLARITY SENSITIVE CAUTION EQUIPMENT DAMAGE HAZARD INCOR...

Страница 7: ... amplifier and flame detector is used Flame Signal Measurement Fig 4 Flame signal can be measured at the Flame Signal Test Jacks see Fig 4 and at the Keyboard Display Module Measure the flame signal at the appropriate times defined in the Checkout section see applicable 7800 SERIES and R7140 Relay Module Instructions See Table 3 for acceptable and maximum flame signal voltage strengths CAUTION Equ...

Страница 8: ...t and the power supply is of the correct voltage and frequency and is sinusoidal 2 Check the detector wiring for defects including a Incorrect connections b Wrong type of wire c Deteriorated wire d Open circuits e Short circuits f Leakage paths caused by moisture soot or accu mulated dirt 3 For a flame rod make sure a There is enough ground area b The flame rod is properly located in the flame c T...

Отзывы: