Honeywell S7999D1048 Manual page 61

Application:
Description:
G
UDC
CONTROLLER
L1
L1
L2
L2
25 R
26 +
SHIELD D+
-
27 16 17
RTD SENSOR
100 OHM
C A
MODBUS COMMUNICATION
HONEYWELL S7810M
Digital Inputs:
None
Vessel water sensor
Analog Inputs:
temperature (0-500°F) (100
RTD)
Setpoints:
Modulation (0-500°F or 0-750 psi)
On-Off (0-500°F or 0-750 psi)
Low Fire Hold (0-500°F or 0-750 psi)
Application File:
Range
Controller
Model (see
footnote)
S7999D1048 COMBUSTION SYSTEM OPERATOR INTERFACE DISPLAY
APPLICATION NOTE
Water Temperature Load Control
On-off and modulating outputs to start/stop and adjust firing rate to maintain a control
setpoint.
+ 19 FIRING RATE
MOTOR
-
21
INTERFACE
5 L1
LOW FIRE
HOLD CONTROL
6
CIRCUIT
8
L1
D-
18 9
ON–OFF CONTROL
BURNER CONTROL
B
M24241

temp01.nge
0–300°F
1
Digital Outputs:
Analog Outputs:
temp02.nge
0–300°F
LOW FIRE HOLD
2
61
On-Off relay
Optional: Modulation Alarm1 (ON
when at or below Modulation setpoint,
OFF when above Modulation setpoint)
Optional: Low Fire Hold Alarm2 (ON
when at or below Low Fire Hold
setpoint, OFF when above Low Fire
Hold setpoint)
PID modulation (4-20mA) to control
firing rate. Modulation based on
modulation setpoint.
temp03.nge
0–500°F
LOW FIRE HOLD
1
temp04.nge
0–500°F
2
65-0321—01