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RM7800E,G,L,M; RM7840E,G,L,M 7800 SERIES RELAY MODULES

Automation and Control Solutions

Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN  55422

Honeywell Limited-Honeywell Limitée
35 Dynamic Drive
Toronto, Ontario  M1V 4Z9
customer.honeywell.com

® U.S. Registered Trademark
© 2010 Honeywell International Inc.
66-1085—04    M.S.  Rev. 09-10 
Printed in U.S.A.

15

RM7800M;

RM7840M with 

open damper 

contacts..

14-13

—

If damper motor is used, motor 

drives damper open.

Damper motor.

16

RM7800M;

RM7840M with 

open damper 

contacts..

4-5

18-L2

If damper motor is used, motor 

drives open; line voltage at 

Terminal 18 after motor is in Low 

Fire position.

1. Low Fire Start Switch.

2. Damper motor.

17

RM7800M;

RM7840M with 

open damper 

contacts..

4-5

and

4-13

18-L2

If damper motor is used, motor 

drives open; zero volts at 

Terminal 18.

1. Low Fire Start Switch.

2. Damper motor.

Final

All

CAUTION

Equipment Damage Hazard.

Improper wiring can damage equipment.

On completing these tests, open the master switch and remove all test jumpers from the 

subbase terminal. Also remove bypass jumpers from the low fuel pressure limits (if used) to 

prevent equipment damage.

Table 8. Static Checkout. (Continued)

Test 

No.

RM7800/

RM7840 

Models

Test 

Jumpers Voltmeter

Normal Operation

If Operation is Abnormal, 

Check the Items Listed Below

Содержание RM7800E

Страница 1: ...Amplifiers for the 7800 SERIES Product Data 65 0131 221818A Extension Cable Assembly Product Data 65 0229 7800 SERIES RELAY MODULES Checkout and Troubleshooting Product Data 65 0249 S7810M ModBus Module Product Data SPECIFICATIONS Electrical Ratings see Table 3 Voltage and Frequency 120 Vac 10 15 50 or 60 Hz 10 Power Dissipation RM7800 RM7840 10W maximum Maximum Total Connected Load 2000 VA Fusing...

Страница 2: ...ty shutdown Vibration Do not install the relay module where it could be subjected to vibration in excess of 0 5G continuous maximum vibration Weather The relay module is not designed to be weather tight When installed outdoors protect the relay module using an approved weather tight enclosure Mounting Wiring Subbase 1 Mount the subbase in any position except horizontally with the bifurcated contac...

Страница 3: ...us Module cable length depends on the number of system modules connected the noise conditions and the cable used The maximum length of all Data Controlbus Module interconnecting wire is 1000 feet 10 Make sure loads do not exceed the terminal ratings Refer to the label on the RM7800 RM7840 or to the ratings in Tables 3 4 and 5 Final Wiring Check 1 Check the power supply circuit The voltage and freq...

Страница 4: ...IFIER RELAY DRIVE CIRCUIT CONTROL POWER TEST JACK REMOTE RESET DDL DDL COMMUNICATIONS INDICATES FEEDBACK SENSING OF RELAY CONTACT STATUS AND LINE VOLT INPUTS FIELD WIRING INTERNAL WIRING IGNITION PILOT PILOT V2 MAIN VALVE 1K 9K RELAY STATUS FEEDBACK AND LINE VOLTAGE INPUTS LIMITS CONTROLLER RUNNING LOCKOUT INTERLOCK PRE IGNITION INTERLOCK 1K1 2K1 5K1 8K1 8K2 9K1 9K2 120 Vac 50 60 Hz FLAME SIGNAL T...

Страница 5: ...re 3 Make sure that mechanically tightened joints along the ground path are free of nonconductive coatings and pro tected against corrosion on mating surfaces Signal ground KDM Data ControlBus Module Use the shield of the signal wire to ground the device to the signal ground terminals 3 c of each device Connect the shield at both ends of the chain to earth ground Terminal No Description Ratings G ...

Страница 6: ... both sides of the RM7800 RM7840 for electrical signal voltage probes 3 Make sure no subbase wiring is projecting beyond the terminal blocks Tuck in wiring against the back of the subbase so it does not interfere with the knife blade terminals or bifurcated contacts IMPORTANT The RM7800 RM7840 must be installed with a plug in motion rather than a hinge action 4 Mount the RM7800 RM7840 by aligning ...

Страница 7: ...OR DOES NOT START UNTIL THE HIGH FIRE SWITCH MAKES RM7800L1053 RM7840L1026 TERMINAL 21 PROVIDES INTERMITTENT PILOT FUNCTION 1 2 2 1 1 TIMED PREPURGE POWER FLAME MAIN PILOT ALARM POWER FLAME MAIN PILOT ALARM ALARM ALARM ALARM 00 IC PII SSC LED DISPLAY M12261C G L2 3 4 4 5 5 6 7 8 9 10 F L1 13 14 15 16 17 18 19 20 21 22 12 LOCKOUT INTERLOCKS INC AIR FLOW SWITCH MASTER SWITCH LOW FIRE START SWITCH 5 ...

Страница 8: ...TION TRANSFORMER 2ND STAGE FUEL VALVE OPTIONAL R W B R W B L1 HOT L2 1 21 9 10 1ST STAGE FUEL VALVE L2 Q7800 3 15 OR 30 SEC INTERRUPTED INTERMITTENT PILOT VALVE 2 2 1 3 4 4 4 JUMPER WIRE FOR 30s MFEP RM7800G RM7840G POWER OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL FIRING RATE MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY PREPURGE HOLD DRIVE TO LOW FIRE POWER PILOT FLAME MAIN POWER P...

Страница 9: ...ON TRANSFORMER 2ND STAGE FUEL VALVE OPTIONAL L1 HOT L2 1 21 9 10 1ST STAGE FUEL VALVE L2 Q7800 3 INTERMITTENT PILOT 2 1 3 4 4 RUNNING INTERLOCKS INC AIR FLOW SWITCH 2 2 2 DAMPER MOTOR RM7800M RM7840M POWER OPERATING CONTROLS AND INTERLOCKS BURNER FLAME SIGNAL DAMPER MOTOR INITIATE INITIAL POWERUP ONLY POWER STANDBY PREPURGE HOLD DRIVE TO LOW FIRE POWER PILOT FLAME MAIN POWER PFEP 10 SEC 4 SEC IF J...

Страница 10: ...ed f Internal system fault occurred g Purge card is not installed or is removed h Purge card is bad 3 PREPURGE Period a Preignition Interlock opens anytime during PREPURGE period RM7840E L b Flame signal is detected after first ten seconds during PREPURGE RM7840E L c High Fire Switch fails to close within four minutes and fifteen seconds after the firing rate motor is commanded to drive to the hig...

Страница 11: ...met the INITIATE sequence restarts If the condition is not corrected and the hold condition exists for four minutes the RM7800 RM7840 locks out Causes for hold conditions in the INITIATE sequence a AC line dropout is detected b AC line noise prevents a sufficient reading of the line voltage inputs c Low line voltage brownouts occur The INITIATE sequence also delays the burner motor starter from be...

Страница 12: ...he RM7800 RM7840 is now in RUN and remains in RUN until the controller input terminal 6 opens indicating that the demand is satisfied or a limit opened Postpurge The RM7800 RM7840 provides a fifteen second POSTPURGE following the completion of the RUN period The blower motor output is powered to drive all products of combustion and any unburned fuel from the combustion chamber It also supplies com...

Страница 13: ...ch when placed in the TEST position holds in PREPURGE with the firing rate motor in the High Fire position 2 In the measured PREPURGE sequence the Run Test Switch when placed in the TEST position causes the PREPURGE timing to stop The firing rate motor is in the High Fire position 3 In Prepurge Drive to Low Fire position the Run Test Switch when placed in the TEST position holds the burner sequenc...

Страница 14: ...ty set on the 0 300 Vac scale 2 Two jumper wires no 14 wire insulated 12 inches 304 8 mm long with insulated alligator clips at both ends An ammeter may be used in place of a jumper wire to check the amp usage when testing the blower motor ignition pilot and main valve operation General Instructions 1 Perform all applicable tests listed in Static Checkout Table 8 in the order listed 2 Make sure al...

Страница 15: ...ons to Terminal 8 If using direct spark ignition check the first stage fuel valve s instead of the pilot valve Same as test no 6 If using direct spark ignition check the first stage fuel valve s instead of the pilot valve 8 4 9 Automatic main fuel valve s open If using direct spark ignition on a model with intermittent pilot on Terminal 21 check the optional second stage fuel valve if used 1 Liste...

Страница 16: ... motor is used motor drives open line voltage at Terminal 18 after motor is in Low Fire position 1 Low Fire Start Switch 2 Damper motor 17 RM7800M RM7840M with open damper contacts 4 5 and 4 13 18 L2 If damper motor is used motor drives open zero volts at Terminal 18 1 Low Fire Start Switch 2 Damper motor Final All CAUTION Equipment Damage Hazard Improper wiring can damage equipment On completing ...

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