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15

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address after 31 is 0. The second method is to use the local reset located on the plug-in board. It is
first necessary to open the operating control (L1-7) to have the MicroM in the IDLE or STANDBY
position. Depressing the reset switch for greater than 10 seconds will cause the address of the
MicroM to be displayed in a binary format on the LEDs located on the programmer board. Because
the default is address 0, and since address 0 would mean no LEDs would be lit; the ALARM LED is
made to flash when the address is 0. The OP CTRL LED is the least significant bit while the
ALARM relay is the most significant bit. To increment the address counter, depress and release the
RESET push button and observe the LED pattern. If the RESET switch is untouched for 30 seconds
the current address displayed will be stored to memory and the MicroM will automatically exit the
address mode.

TEST JACK VOLTAGE

For all amplifiers, the MicroM provides a uniform 0-10 volt signal to represent the flame signal
strength. A signal reading greater than 4 volts is considered sufficient to provide reliable operation.
This same signal is also available in a numerical format on the ED510 display. The chart below cor-
relates the test jack voltage to the numerical value. The signal clamps at 10 volts at a numerical value
greater than 42 and the numerical value clamps at 80.

0

1

2

3

4

5

6

7

8

9

10

6

16

20

24

28

32

36

40

60

80

AMPLIFIER TEST JACK VOLTAGE VS. ED510 DISPLAY BOARD

T

EST JACK VOL

T

AGE

Содержание MicroM Series

Страница 1: ...on of the current operating status as well as diagnostic history To maximize safety the MEP696 provides early spark termination followed by a pilot prov ing period This prevents the unwanted detection of spark generated by a maladjusted pilot and spark assembly The air flow switch connected between terminals 7 and 6 must be closed within 10 seconds after the start of a cycle Below is a detailed li...

Страница 2: ...F 40qC Photocell 45CM1 165qF 74qC 40qF 40qC Flame Rod Tip 2460 F 1500qF 816qC 40qF 40qC 48PT2 125qF 52qC 40qF 40qC CSIA5 140qF 60qC 40qF 40qC COMBINATION NUMBER PILOT FUEL TERMINAL 3 IGNITION TERMINAL 4 MAIN VALVE TERMINAL 5 1 C NO LOAD E 2 B NO LOAD E 3 NO LOAD NO LOAD E 4 E A E 5 NO LOAD A E 6 D A E 7 D A D 8 NO LOAD A D A B C D E 4 5A Ignition 50 VA Pilot Duty plus 4 5A ignition 180 VA Ignition...

Страница 3: ... CAUTION Published load ratings assume that no control be required to handle inrush current more often than once in 15 seconds The use of control switches solenoids relays etc which chatter will lead to premature failure It is important to run through a test operation with fuel shut off following the tripping of a circuit breaker a blown fuse or any instance of chattering of any external current c...

Страница 4: ...ound is required to ensure that large currents involved with any surge voltages will follow the desired path in preference to alternative paths where extensive damage may occur to equipment Refer to bulletin MP 5601 for a detailed description of the MEP696 programmer Refer to bulletin MC 5000 for additional information about the MicroM product line MicroM Chassis Types Common for all controls incl...

Страница 5: ...ush the module into position Insert the programmer module into the slot at the right side of the chassis and gently push the module into position WARNING Turn off the power when installing or removing the control PV MV S1 7 3 5 4 1 A S2 PILOT VALVE BLOWER MOTOR ALARM 8 120VAC 50 60Hz T P FLAME AMPLIFIER SPARK KI KF IGNITION H N 2 FLAME SCANNER OR CONTACTOR MAIN FUEL VALVE OPERATING CONTROL KA KB A...

Страница 6: ... g Wick man 19373 071 K WARNING Disconnect power before servicing FIGURE 3 MEP696 Programmer Dip Switch Configuration Note C refers to switch closed position closed position is when the switch is toward the printed cir cuit board O refers to switch open position or when the switch is moved away from the printed cir cuit board Indicating arrow on top of programmer cover points toward closed positio...

Страница 7: ... to open Recycle Applies to air flow interlock opening during the Run condition If the air flow interlock Terminal 6 opens the control will de energize Terminals 3 4 and 5 and if Recycle is selected a new prepurge period will begin Lockout and alarm will occur imme diately after air flow interlock opening if Non Recycle is selected LED INDICATOR LIGHTS The MEP696 Programmer Module has 5 LED lights...

Страница 8: ...g the Reset push button while in the Idle or Off state LOCKOUT CODES NOT LIGHTED LIGHTED FLASHING All LED s Flashing indicates defective programmer All MicroM chassis are shipped with a convenient peel off label that can be applied to any surface inside cover for future reference MSGN DESCRIPTION OP CTRL AIRFLOW INTLCK TFI FLAME ALARM DEC HEX 6 6 Lockout Line Frequency Noise Detected 7 7 Lockout F...

Страница 9: ...ace Amplifier module Amplifier Auto Check Fail Flame signal too high Use orifice in sight pipe Internal Amplifier diagnostic fault Replace Amplifier module Check Scanner Defective shutter Inspect scanner wiring replace scanner UV tube false firing Replace UV tube or scanner Check Blown Fuse No power detected on terminal 3 Inspect defective pilot valve or igniter Defective fuse Replace fuse Line Fr...

Страница 10: ...ata being requested In Modbus register addresses begin at 40001 but is interpreted as address 00 DAT is the number of words being requested A word is an integer consisting of 2 bytes The normal response from a slave is as follows DBC is the data byte count being returned It must be two times the DAT number from the poll request DATA is the data returned and is always a series of 2 byte integers If...

Страница 11: ... STATUS 83 053H RUN 202 0CAH LOCKOUT 01 1 MSGN Current message being displayed see Table 3 02 1 GSTAT Defines Timer Type 03 1 TIMER Time Flame Address 04 1 FLAME Flame Signal 05 1 3 LOGSTAT Current logic module PURGE PTFI AUTO 06 1 INPUTS Input limits state 07 1 OUTPUTS Output relays state 08 2 4 or 8 SYSMINS System on minutes 10 2 or 4 BNRMINS Burner on minutes 12 2 CYCLES Completed Burner Cycles...

Страница 12: ...ould be ignored If GSTAT is between 4 and 7 the TIMER represents the cur rent value flame signal If GSTAT is a 1 2 or 3 then TIMER represents a running timer value The baud rate of the MicroM is fixed at 4800 bits per second The format of the data is 8 data bits no parity and 1 stop bit Due to the RS485 format the communication format is considered half duplex That is only one user is permitted on...

Страница 13: ...able 1 Logic Dispatch LOGIC DISPATCHER VALUE MicroM HEX DEC 45H 69 MPOSTIDLE 46H 70 MPREPURGE1 47H 71 MPURGE 48H 72 MTFI 49H 73 MSTABLE 4AH 74 MTFMF 4BH 75 MAUTO 4CH 76 MSHTDWN1 4DH 77 MSHTDWN2 4EH 78 MIDLE ...

Страница 14: ...e Table 2 Message Description DEC HEX MicroM Message 1 1 L1 7 OPEN 2 2 FALSE FLAME 3 3 STARTING BURNER 4 4 5 5 INTRLCK OPEN 6 6 LOCKOUT LINE FREQUENCY NOISE DETECTED 7 7 LOCKOUT FLAME FAIL PTFI 8 8 UNIT ADDRESS 9 9 MTFI 10 0AH IGNITION TIMING 11 0BH 12 0CH FLAME SIGNAL 13 0DH CYCLE COMPLETE 14 0EH OFF 16 10H LOCKOUT AMPLIFIER HIGH COUNT FAIL 19 13H LOCKOUT FLAME FAIL MTFI 20 14H LOCKOUT FALSE FLAM...

Страница 15: ...ress counter depress and release the RESET push button and observe the LED pattern If the RESET switch is untouched for 30 seconds the current address displayed will be stored to memory and the MicroM will automatically exit the address mode TEST JACK VOLTAGE For all amplifiers the MicroM provides a uniform 0 10 volt signal to represent the flame signal strength A signal reading greater than 4 vol...

Страница 16: ...otocells which is found defective in material or workmanship or which otherwise fails to conform to the description of the product on the face of its sales order THE FOREGOING IS IN LIEU OF ALL OTHER WARRANTIES AND FIREYE MAKES NO WARRANTY OF MERCHANTABILITY OR ANY OTHER WARRANTY EXPRESS OR IMPLIED Except as specifically stated in these general terms and conditions of sale remedies with respect to...

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