Honeywell 700 ユーザーズマニュアル

66-2069—02

12

INCREASE, DECREASE and STORE buttons (range 

of 00 to 29).

— Used to restore all settings to the factory default 

values

↑

  

— Used to increase parameter value when in 

programming mode

— 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%.

— Stores new parameter values during programming

— After making changes “--” will be displayed indicating 

the new values are accepted and stored

↓

  

— Used to decrease parameter value when in 

programming mode

— 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)

— Used during the automatic parameter setup sequence

— 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

— Used to set the FFRT timing along with the 

INCREASE, DECREASE and STORE buttons

— Used in conjunction with the INCREASE, DECREASE 

and STORE buttons to select the proportional mA 

output for the flame signal

— 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

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. 22, 23, 24, 25 and 26.

The gain of the IR and UV viewing heads can be adjusted. In 

addition to the information in this section, refer to Fig. 26. 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” 

for the UV viewing head. The “r” or “u” denote IR or UV 

viewing heads, respectively, while the numeric digit indicates 

the current gain setting. The gain can be adjusted from 1 to 9 

with a gain of 5 being the factory default gain. 

To change the gain, press and hold the SET GAIN button for 

two seconds until the current value is displayed. Use the 

INCREASE and DECREASE buttons to change the setting as 

appropriate while the value is displayed. 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 

value is displayed, the display will return to the operation 

mode without saving the new setpoint.

To exit the menu at any time without saving changes, simply 

press the RESET/rE button.

The gain is live; changes are effective immediately, but if the 

displayed gain value is not stored (by pressing STORE), and 

no other buttons are pressed, the processor returns to the 

previous setting after four seconds.

The two numeric digits on the Model 700 signal processor 

normally display the incoming count during operation; that is, 

the number of pulses that arrive between self-check pulses. 

This count ranges from 00 to 29.

Refer to Fig. 22 for a flowchart of setting the Relay On 

setpoint. Press and hold the RELAY ON SETPOINT key for 

two seconds to access this setpoint. The RELAY ON SET 

POINT value will be displayed. If no further keys are pressed, 

this display will disappear in four seconds and the incoming 

count will again be displayed. If the RESET key is pressed, 

the display will return immediately to displaying the incoming 

count.

While the RELAY ON SET POINT is displayed, you may 

increase or decrease the setting by using the INCREASE and 

DECREASE arrow keys. To store the new setting, press the 

STORE button until “- -” is shown, indicating the value has 

been accepted.

To exit the menu at any time without saving changes, simply 

press the RESET/rE button or wait 4 seconds until the display 

reverts to the incoming count value. To extend the display 

time, press the RELAY ON SETPOINT button again; the 

display will time out for four seconds after the key is released if 

no other buttons are pressed.

The displayed value of the RELAY ON SET POINT is live; that 

is, if the relay is off and the adjusted value falls below the 

current flame signal count, the relay will turn on immediately 

(FFRT settings are ignored). This immediate response can be 

seen if the count is low and the RELAY ON SET POINT is set 

above it; if the RELAY ON SET POINT is then adjusted down 

to the count level, the FLAME ON relay will be energized. 

For a flowchart of this setpoint process, refer to Fig. 23. The 

key labeled RATIO (%) RELAY OFF/RELAY ON is used to set 

the RELAY OFF SET POINT at a percentage of the RELAY 

ON SET POINT. This percentage is adjustable from 20% to 

80%. For example, if the RELAY ON SET POINT is set to 16 

and the RATIO (%) is set to 50% (the factory default values) 

the relay will energize if the displayed count goes to 16 or 

higher and de-energize when the count drops to 08 or less for 

one to three seconds, depending on the FFRT (Flame Failure 

Response Time) setting. The adjustment of the RATIO setting