17
2.3.2.- VARIABLE WIRING TERMINALS (I4-I12 and O1-O18)
The wizard (
Section 3.1.
) allocates the function to each of the variable wiring terminals. This
allocation depends on the following parameters of the refrigeration installation:
No. of Compressors (user parameter
CONF_1
)
No. of Stages per compressor (user parameter
CONF_2
).
No. of Fans or inverter use (user parameters
CONF_5
and
CONF_6
).
Alarm output (parameter
CONF_4
).
Examples of a safety circuit for a compressor:
+24 V
+24 V
C1
C1
C1
C1
+24 V
+24 V
T-C1
T-C1
Thermistor
Thermistor
Switch
Oil Pressure
Differential
Switch
Oil Pressure
Differential
SIMPLIFICATION
Contact type can be
c o n f i g u r e d b y
means of parameter
ENTR 3
All the variable wiring terminals are via transistors to permit an unlimited number
of operations.
Therefore, it is necessary to connect a 24 V relay to each of these terminals. The
use of plug-in relays is recommended to make replacement easier in the case of
failure.
The compressors, fans and the inverter (if used) have a safety circuit to protect the
installation against anomalous situations. All these are connected to the digital
input terminals (I4 – I12) as defined in the tables on pages 23 to 27.
we make it easy
Summary of Contents for AKO-21006
Page 117: ...NOTES 117 we make it easy...
Page 118: ...118 NOTES we make it easy...
Page 119: ...NOTES 119 we make it easy...
