Signal Processor User Interface; Push Button Functions; Manual Setup Of Setpoints; Setting The Viewing Head Gain - Honeywell 700 User Manual

side. The orifice disk is then inserted. Use a second retaining
ring to hold it in place so that it is sandwiched tightly between
the two retaining rings.
If the displayed flame count is 25 or higher when the gain is
set to 1, an orificing disc inserted in the back end of the
mounting block can be used. Choose a disc that gives a
reading of 12 to 24 at a low fire firing rate. The discs have a
range of orifice sizes; each size step results in about a 2:1
change in the counts displayed.

Signal Processor User Interface

The 700ACSP and 700DCSP signal processors have a user
interface that includes four lights, a two-digit display and
twelve push buttons for operation and programming. Each
button has at least one specific purpose.
To enter a menu, press and hold the applicable button for 2
seconds. Adjustments to the applicable setpoint can be made
via the INCREASE or DECREASE arrow buttons. To store the
new setting, press the STORE button until "--" is shown,
indicating the value has been accepted.
If no activity occurs for a period of four seconds while the
menu value is displayed, it will revert back to the operating
display.
To exit a menu at any time without saving changes, simply
press the RESET/rE button.
The following describes the functions of the LED indicators,
display and push buttons:
Front Panel LED Indicators and Display
• ON SEQ/AUTO SET LED (green):
— Used in conjunction with the BNR-ON SEQ START/
END and BNR-OFF SEQ START/END buttons during
the automatic setup process
• OFF SEQ/FAULT LED (green):
— Used in conjunction with the BNR-ON SEQ START/
END and BNR-OFF SEQ START/END buttons during
the automatic setup process
— Indicates a fault condition
• Two digit display
— When in operating mode, the display indicates the
current flame signal, which ranges between 00 and 29
— Upon power up, indicates whether an IR or UV viewing
head is attached and the selected gain setting; such
as r7 (IR with gain of 7) or u5 (UV with gain of 5).
— Indicates various characters during the automatic
setup process as well as whether the panel is locked
• FLAME SIG LED (yellow):
— When a flame is present, LED flashes at a rate
proportional to flame signal, except when the pulses
are interrupted once per second for viewing head self-
checks.
• FLAME ON LED (red):
— When the flame signal is above the selected value, the
LED will be illuminated and the flame relay will be
energized.
HONEYWELL MODEL 700/800 SIGNAL PROCESSOR AND VIEWING HEAD

Push Button Functions

• RELAY ON SETPOINT button:
— Allows user to select flame on threshold value. When
the flame signal is above the selected value, the flame
relay will be energized. Used in conjunction with the
INCREASE, DECREASE and STORE buttons (range
of 00 to 29).
• LOAD FACTORY DEFAULTS button:
— Used to restore all settings to the factory default
values
↑
• INCREASE button:
— Used to increase parameter value when in
programming mode
• RATIO (%) RELAY OFF/RELAY ON button:
— Used along with the INCREASE, DECREASE and
STORE buttons to set the RELAY OFF setpoint at a
percentage of the RELAY ON setpoint. Adjustable
from 20% to 80%.
• STORE button:
— Stores new parameter values during programming
— After making changes "--" will be displayed indicating
the new values are accepted and stored
↓
• DECREASE button:
— Used to decrease parameter value when in
programming mode
• BNR-ON SEQ START/END button:
— Used to initiate and proceed through the automatic
parameter setup sequence, which includes the RELAY
ON, RATIO (%) and GAIN settings (the FFRT, mA
output and communication address must be set
manually)
• BNR-OFF SEQ START/END button:
— Used during the automatic parameter setup sequence
• ACCEPT RATIO/SET GAIN button:
— Allows user to set the viewing head gain in conjunction
with the INCREASE, DECREASE and STORE buttons
— Used in conjunction with the BNR-ON SEQ START/
END and BNR-OFF SEQ START/END buttons during
the automatic setup process
• FFRT 1/2/3 SEC OPTION button:
— Used to set the FFRT timing along with the
INCREASE, DECREASE and STORE buttons
• 0-20MA 4-20MA OPTION button:
— Used in conjunction with the INCREASE, DECREASE
and STORE buttons to select the proportional mA
output for the flame signal
• RESET rE button:
— Resets a lockout condition
— Also used to exit a menu while programming
— Used to set the Modbus address along with the
INCREASE, DECREASE and STORE buttons

Manual Setup of Setpoints

The keypad of the signal processor is used to set the IR/UV
GAIN, RELAY ON, RATIO % (Relay Off), FFRT and mA output
option setpoints. The following section describes this process.
Also refer to Fig. 21, 22, 23, 24 and 25.

Setting the Viewing Head Gain

The gain of the IR and UV viewing heads can be adjusted. In
addition to the information in this section, refer to Fig. 25. At
power-up, the 700 signal processors display codes to tell the
operator what type of viewing head and what gain is being
used. Default values are "r5" for the IR viewing head and "u5"
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