Nibe SMO S40 - Page 28

Activate the function by connecting potential-free
switch functions to two inputs selected in menu 7.4
(SG Ready A and SG Ready B).
Closed or open switch means one of the following:
– Blocking (A: Closed, B: Open)
“SG Ready” is active. The compressor in the
air/water heat pump and additional heat are blocked
in the same way as current tariff blocking.
– Normal mode (A: Open, B: Open)
"SG Ready" is not active. No effect on the system.
– Low price mode (A: Open, B: Closed)
"SG Ready" is active. The system focuses on costs
savings and can for example exploit a low tariff from
the electricity supplier or over-capacity from any own
power source (effect on the system can be adjusted
in the menu 4.2.3).
– Overcapacity mode (A: Closed, B: Closed)
"SG Ready" is active. The system is permitted to run
at full capacity at over capacity (very low price) with
the electricity supplier (effect on the system is set-
table in menu 4.2.3).
(A = SG Ready A and B = SG Ready B )
External blocking of functions
An external switch function can be connected to
SMO S40 for blocking various functions. The switch
must be potential-free and a closed switch results in
blocking.
NOTE
Blocking entails a risk of freezing.
Functions that can be blocked:
• heating (blocking of heating demand)
• cooling (blocking cooling requirement)
• hot water (hot water production). Any hot water circu-
lation (HWC) remains in operation.
• compressor in heat pump EB101 and/or EB102
• internally controlled additional heat
• tariff blocking (additional heat, compressor, heating,
cooling and hot water are disconnected)
OPTIONAL SELECTION FOR AUX OUTPUTS
(POTENTIAL-FREE SWITCHING RELAY)
It is possible to have an external connection via a relay
function via a potential-free switching relay (max 2 A)
on the joint board (AA100), terminal block X6:C,NO,NC
(AUX10) or X7:C,NO,NC (AUX11). The function must be
activated in menu 7.4.
NO
AUX 11
K9
K8
AUX 10
C
NC
NO
C
NC
AA100-X7
AA100-X6
The picture shows the relay in the alarm position.
If SMO S40 is switched off or in emergency mode, the
relay is in alarm position.
Caution
The relay outputs may be subjected to a max
load of 2 A at resistive load (230V AC).
TIP
The AXC accessory is required, if more than
two functions are to be connected to the AUX
outputs.
Optional functions for external connection:
Indications
• alarm indication
• cooling mode indication (can be selected when the
heat pump is permitted to produce cooling)
• cooling mode indication cooling 4 pipes (can be selec-
ted when the heat pump is permitted to produce
cooling)
• holiday indication
• away mode
• external heating medium pump
• indication of low electricity price (Smart Price Adaption)
• PV panel control (if accessories EME are installed)
Control
• control of circulation pump for hot water circulation
• control of external circulation pump (for heating medi-
um)
NOTE
The relevant distribution box must be marked
with a warning about external voltage.
NIBE SMO S40Chapter 5 | Electrical connections28