Optional connections
Load monitor
Integrated load monitor
VVM 310 is equipped with a simple form of integrated
load monitor, which limits the power steps for the electric
additional heat by calculating whether future power
steps can be connected to the relevant phase without
the specified main fuse being exceeded. In those cases
where the current would exceed the specified main fuse,
the power step is not permitted. The size of the prop-
erty’s main fuse is specified in menu 5.1.12.
Load monitor with current sensor
When many power-consuming products are connected
in the property at the same time as the electric additional
heat is in operation, there is a risk of the property’s main
fuses tripping. VVM 310 is equipped with a load monitor
that, with the aid of current sensors, controls the power
steps for the electric additional heat by redistributing
the power between the different phases or disengaging
the electric additional heat in event of an overload in a
phase. Reconnection occurs when other current consump-
tion is reduced.
Connecting current sensors
A current sensor should be installed on each incoming
phase conductor in to the distribution box to measure
the current. The distribution box is an appropriate install-
ation point.
Connect the current sensors to a multi-core cable in an
enclosure directly adjacent to the electrical distribution
unit. The multi-core cable between the enclosure and
VVM 310 must have a cable area of at least 0.5 mm².
Connect the cable to the input board (AA3) on terminal
block X4:1-4 where X4:1 is the common terminal block
for the three current sensors.
L
PEN
1
L
2
L
3
AA3-X4
AA3-X4
Electrical
distribution unit
VVM 310
Incoming electricity
W
ilo
W
ilo
VVM 310
VVM 310
-T1 -T2 -T3
1 2 3 4
If the installed heat pump is frequency controlled, it will
be limited when all power stages are disengaged.
External connection options
VVM 310 has software controlled inputs and outputs on
the input board (AA3), for connecting the external switch
function or sensor. This means that when an external
switch function or sensor is connected to one of six spe-
cial connections, the correct function must be selected
to the correct connection in the software in VVM 310.
Caution
If an external switch function or sensor is con-
nected to VVM 310, the function to use input
or output must be selected in menu 5.4, see
page 55.
Selectable inputs on the input board for these functions
are AUX1 (X6:9-10), AUX2 (X6:11-12), AUX3 (X6:13-14),
AUX4 (X6:15-16) and AUX5 (X6:17-18). Selectable out-
puts are AA3:X7.
block heating
activate temp lux
not used
not used
not used
alarm output
soft in/outputs5.4
F1245
Externt
9
10
11
12
13
14
15
16
B
A
AA3-X6
External
VVM 310
AA3-X6
The example above uses the inputs AUX1 (X6:9-10) and AUX2
(X6:11-12) on the input board (AA3).
Caution
Some of the following functions can also be
activated and scheduled via menu settings.
31
Chapter 5 |
Electrical connections
NIBE VVM 310
Summary of Contents for VVM 310 EMK
Page 1: ...Installer manual APH NIBE VVM 310 EMK Indoor module IHB EN 1750 8 231175 ...
Page 69: ...Electrical wiring diagram 3x400 V 69 Chapter 12 Technical data NIBE VVM 310 ...
Page 70: ...NIBE VVM 310 Chapter 12 Technical data 70 ...
Page 71: ...71 Chapter 12 Technical data NIBE VVM 310 ...
Page 72: ...NIBE VVM 310 Chapter 12 Technical data 72 ...
Page 73: ...73 Chapter 12 Technical data NIBE VVM 310 ...
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