Honeywell EC7850A Series User Manual

EC7830A, RM7830A, EC7850A, RM7850A 7800 SERIES RELAY MODULES
32-00198—01 6
Fig. 3. Internal block diagram of EC/RM7850A (see Fig. 5 for detailed wiring instructions).
L1
HOT
N
1
4
2
19
CONFIGURATION
JUMPERS
PLUG-IN PURGE
TIMER CARD
F
G
22
PLUG-IN
FLAME
AMPLIFIER
MICROCOMPUTER
RUN/TEST
SWITCH
RESET
PUSHBUTTON
FLAME SIGNAL
TEST
JACK
RELAY
DRIVE
CIRCUIT
1K
2K
3K
4K
5K
6K
7K
8K
9K
CONTROL
POWER
POWER SUPPLY
18
17
RELAY
STATUS
FEEDBACK
AND LINE
VOLTAGE
INPUTS
10
8
21
9
5
3
OPTIONAL KEYBOARD
DISPLAY MODULE
RS485
16
1K1
2K2 5K1
4K1
7K1
2K1
PV1
PV2
MV
3K1
6K1
7
ES1
ES3
ES2
3K2
SAFETY RELAY
CIRCUIT
20 6
FAN
AL
IGN
AL
DDL
13
15
14
12
HIGH FIRE
COMMON
LOW FIRE
MODULATE
REMOTE
RESET
8K1
8K2
9K2
9K1
INDICATES FEEDBACK SENSING
OF RELAY CONTACT STATUS
AND LINE VOLTAGE INPUTS
RELAY CONTACT OPEN
INTERNAL WIRING
FIELD WIRING
RELAY COIL
RELAY CONTACT CLOSED
DDL
COMMUNICATIONS
1
2
3
5
USER TERMINALS
1
2
2
120 VAC, 50/60 Hz POWER SUPPLY, RM7850A; 220-240 VAC,
50/60 Hz POWER SUPPLY, EC7850A. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION AS REQUIRED.
TO CONNECT L1 DIRECTLY TO LOS, AT LEAST ONE CONTROLLED
SHUTDOWN MUST BE PROVIDED EVERY 24 HOURS.
M15184B
STATUS
LEDS
RTLOS
LD2
SHUTTER
FG
...
22

Honeywell EC7850A Series Specifications

General

Brand	Honeywell
Model	EC7850A Series
Category	Relays
Language	English