Honeywell 7800 SERIES Product Data page 11

4. First-out LED
a. The First-out LED can have one of three states:
(1) LED ON indicates the LED array is latched in a
mode showing the status at the time of the
lockout.
(2) LED OFF indicates the LED array is in a Current
Status mode, power is off, or the LED is
defective.
(3) LED FLASHING indicates the Select keypad is
being depressed constantly (four seconds or
longer) and a lockout is not present.
5. Current LED
a. The Current LED can have one of two states:
(1) LED ON indicates the LED array is in a Current
status.
(2) LED OFF indicates the LED array is latched in a
first-out mode, power is off or the LED is
defective.
Select Keypad Functions
The Select Keypad provides two functions:
1. When depressed momentarily, the S7830 mode will
toggle between lockout (first-out) and Current status.
Therefore, the operator can actively switch back and
forth between these two modes to define the status of
the 21 digital switched inputs.
2. When depressed constantly (four seconds), all 25 LED
(exclusive of the POWER LED) in the array will be
forced on. This is a means to check to make certain that
an LED can illuminate or is operating properly.
Selectable Message
EA not connected —
CS: Reference Table 5
Valve Close 1 or 0
Burner Switch
OperControl
Aux Limit 1
Aux Limit 2
LWCO
High Limit
Aux Limit 3
Oil Select
HiOilPres
LowOilPres
HiOilTemp
LowOilTemp
Atomize Sw
Gas Select
HiGasPres
Table 2. Expanded Annunciator Informational Index.
Display Value
The Expanded Annunciator is not connected.
Current status of Expanded Annunciator (EA) digital switch points.
The main valve proof of closure switch is open (0) or closed (1).
The burner switch is open (0) or closed (1).
The operating control (pressure or temperature) switch is open (0) or closed (1).
An auxiliary limit switch is open (0) or closed (1).
An auxiliary limit switch is open (0) or closed (1).
The low water cutoff switch is open (0) or closed (1).
The appliance high limit (pressure or temperature) switch is open (0) or closed (1).
An auxiliary limit switch is open (0) or closed (1).
The fuel oil select switch is open (0) or closed (1).
The high oil pressure limit switch is open (0) or closed (1).
The low oil pressure limit switch is open (0) or closed (1).
The high oil temperature limit switch is open (0) or closed (1).
The low oil temperature limit switch is open (0) or closed (1).
The oil atomizing proving switch is open (0) or closed (1).
The gas select switch is open (0) or closed (1).
The high gas pressure limit switch is open (0) or closed (1).
7800 SERIES S7830 EXPANDED ANNUNCIATOR
Reset Keypad Function
The Reset Keypad is used to cause an electrical reset of the
S7830. If the operation of the S7830 is in question, an attempt
can be made to reset the internal microprocessor. It is not
necessary to depress the Reset Keypad after a system
lockout. Once the 7800 SERIES Relay Module is reset, the
S7830 LED array automatically will be reset to the Current
status mode.
Display Messages
The S7830 is used to enhance the lockout and hold
information generated by the 7800 SERIES Relay Module,
and allows point-by-point interrogation of the digital switch
points by using the S7800 Keyboard Display Module. This
information is contained within an Expanded Annunciator
informational index (see Table 2).
S7800 Expanded Annunciator Informational
Index
Using the S7800 Keyboard Display Module, referring to
Table 2, the individual ON/OFF status of 22 digital points can
be monitored. The display message values for the Expanded
Annunciator Informational Index are also explained in Table 2.
Hold Messages
Using the S7800 Keyboard Display Module, the S7830
provides 16 HOLD messages. The HOLD messages are
summarized in Table 3.
Lockout Messages
Using the S7800 Keyboard Display Module, the S7830
provides 20 enhanced LOCKOUT messages. The LOCKOUT
messages are summarized in Table 4.
Description
11
a
65-0101—03