Electrical connections
Circuit board GM-C3
27
S501 T8
Temperature input
2 x 0.5 mm²
Buffer sensor 1
S501 T9
Temperature input
2 x 0.5 mm²
Buffer sensor 2
S501 T10
Temperature input
2 x 0.5 mm²
Buffer sensor 3
S501 T11
Temperature input
2 x 0.5 mm²
Buffer sensor 4
S501 T12
Temperature input
2 x 0.5 mm²
Buffer sensor 5
S502 T13
Temperature input
2 x 0.5 mm²
heating circuit 1: Flow (for buffer operation)
S502 T14
Temperature input
2 x 0.5 mm²
Unassigned
S502 LD1
LED output
2 x 0.5 mm²
Unassigned
S503 T15
Temperature input
2 x 0.5 mm²
unassigned
S503 T16
Temperature input
2 x 0.5 mm²
Unassigned
S503 LD2
LED output
2 x 0.5 mm²
Unassigned
S504
PWM output / analogue output
2 x 0.5 mm²
Speed for pump on terminal [S2]
S505
PWM output / analogue output
2 x 0.5 mm²
Speed for pump on terminal [S3]
S506
PWM output / analogue output
2 x 0.5 mm²
Speed for pump on terminal [S4]
S507
PWM output / analogue output
2 x 0.5 mm²
Speed for pump on terminal [S5]
S508A
CAN-bus
2 x 2 x 0.6 mm CAN-bus connection to the ETAtouch con-
trol system
S508B
CAN-bus
2 x 2 x 0.6 mm Unassigned
S509
Signal wire
to circuit board [MK-E]: terminal [S517]
S510
Data line
to ETAtouch control panel
S511
RS-485 bus
Digital room sensor
S512A
24 V supply
from circuit board [NT-10VA]: terminal [X3]
S512B
Supply 24 V
2 x 0.75 mm²
Unassigned
S513
Analogue or digital input
3 x 0.75 mm²
Unassigned
S514
Analogue or digital input
3 x 0.75 mm²
Unassigned
X2
CAN-Bus supply GND (for stand-alone operation)
X3
Boot jumper
X4
CAN bus terminal resistor
X5
RS-485 bus terminal resistor
X8
Terminal for plug-in circuit board
X9
Terminal for plug-in circuit board
X24
CAN-Bus 24 V (for stand-alone operation)
Terminal
Function
Minimum
cross-sec-
tion
Standard assignment