The Scb-01 Expansion Pcb - REMEHA Gas 210 Ace 80 Installation And User Manual

Fig.42 Release input
RL
5.6.4

The SCB-01 expansion PCB

Fig.43 SCB-01 PCB
Status Status
Nc C No Nc
Fig.44 Status notifications
Status A Status B
Nc C No Nc C No
Fig.45 0–10 V output connector
0-10
-
+
7837114 - v.01 - 10012023
AD-3001303-02
0-10
C No 0 +
AD-3001514-01
AD-3001312-01
AD-3001305-01
Release input
Caution
Only suitable for potential-free contacts (dry contact).
The boiler has a release input. A potential-free contact can be connected
to the RL terminals of the connector.
If the contact is closed during a heat demand, the boiler will be blocked
immediately.
If the contact is closed when there is no heat demand, the contact does
nothing until the main PCB receives a 'start burner'- command. After that
command, a waiting time starts. If the contact is closed during this
waiting time, the burner does not start and the boiler will be blocked. Set
the waiting time with parameter AP008. A waiting time of 0 will disable
the contact.
The SCB-01 has the following features:
Two potential free contacts for status notifications
0–10 V output connection for a PWM system pump
Expansion PCBs are automatically recognised by the control unit of the
boiler. If expansion PCBs are removed, the boiler will show an error code.
To resolve this error, an auto-detect must be carried out after removal.
Connecting status notifications
The two potential-free contacts, Status, can be configured as required.
Depending on the setting, a particular status can be transmitted by the
boiler.
Connect a relais as follows:
Nc Normally closed contact. Contact will open when status occurs.
C Main contact.
No Normally opened contact. Contact will close when status occurs.
Select the desired status notification (setting) using parameter EP018 and
EP019.
Connecting 0–10 V output
The 0-10 contact can be used to connect a PWM system pump. The
speed of the pump is modulated based on the signal received from the
boiler. Depending on the make and type of pump, the pump can be
controlled by a 0–10 V or a PWM signal.
Connect the system pump controller to connector 0-10.
Select the type of signal that will be sent from the boiler using the
parameter EP029.
Select the type of signal that controls the pump using the parameter
EP028.
5 Installation
31