E7014
4
• ESA ESTRO-Q: single stage burner (one gas valve) dedicated to combustion unit controlled via serial
communication modes.
Moreover the release ESTRO-A, ESTRO-B and ESTRO-C allow to set an output signal for burner
lockout and a digital input signal. The input signal availability is mandatory (according EN746-2) for high
temperature applications in order to accomplish the dedicated function.
All ESA ESTRO releases are currently provided with ECS serial communication interface, in order to
allow the remote burner control through ECS or Modbus-RTU protocols.
The serial communication allows the complete control of the combustion unit: burner ignition and shutoff,
first and second gas stages operation, air valve control, burner supervision and flame detection.
ESA
ESTRO
Q
IGNITION
TRANSFORMER
GAS VALVE
REMOTE
CONTROL
FLAME SIGNAL
FIELDBUS
P
L
C
GAS
ESTRO-B
2
5
6
3
4
+
1
A
-
8
9
7
B
10
GAS
2
1
GAS
ESTRO-A
N
N
5
6
3
4
+
+
L
L
1
-
-
8
9
7
2
10
AIR
A
1
GAS
ESTRO-C
2
5
6
3
4
+
1
A
-
8
9
7
B
10
1
GAS
ESTRO-Q
N
+
-
V
N
+
L
*
-
N F
T
*
G
1
ECS BUS
POWER LINE
POWER
SUPPLY
SAFETY
LIMITS
