English
INSTALLATION AND CONNECTION
1. Check the consumption of the accessories that will be installed in each backplane slot through
2. Add the consumption of each accessory to be connected to slots A to G using the equation:
I
ACC
=
I
ACC,A
+
I
ACC,B
+
I
ACC,C
+
I
ACC,D
+
I
ACC,E
+
I
ACC,F
+
I
ACC,G
, to obtain the total consumption
of the accessories;
3. Calculate
I
OU T
, which is the total consumption of the circuits to be connected to VOUT. Even with an
external power supply, a maximum of 0.8 A can be drawn from VOUT without tripping the internal
overcurrent protection;
4. Size the minimum current capacity of the external power supply using the equation:
I
F E
=
0,5 A
+
I
ACC
+
I
OU T
;
5. Use an external 24 Vdc
±
10 % power supply with a current capacity of at least
I
F E
. The external power
supply must be connected to the terminals VIN and GND of
6. Check if the internal power supply is also able to feed the necessary current to the accessories and loads
connected to VOUT, i.e.,
I
OU T
+
I
ACC
≤
0,8 A. If not, ensure that the external power supply will be energized
before or together with the inverter power-up, and that the inverter will be de-energized before the external
power supply.
Table 3.17:
Examples of how to check the consumption of the external power supply and current available in VOUT
Ex.
Accessory
(2)
SLOT A
SLOT B
SLOT C
SLOT D
SLOT E
SLOT F
SLOT G
I
ACC
I
OU T
I
F E
1
Model
REL-01
0.05 A
0.1 A
0.65 A
Consumption
0.05 A
2
(1)
Model
REL-01
TEMP-01
CCAN-W
ENC-01
0.30 A
0.80 A
1.60 A
Consumption
0.05 A
0.05 A
0.00 A
0.20 A
3
Model
REL-01
TEMP-01
CCAN-W
ENC-01
IOAI-01
IOD-01
IOD-01
0.40 A
0.40 A
1.30 A
Consumption
0.05 A
0.05 A
0.00 A
0.20 A
0.10 A
0.00 A
0.00 A
4
(1)
Model
REL-01
TEMP-01
ENC-01
ENC-01
IOAI-01
IOAI-01
IOAI-01
0.80 A
0.10 A
1.40 A
Consumption
0.05 A
0.05 A
0.20 A
0.20 A
0.10 A
0.10 A
0.10 A
5
(1)
Model
ENC-01
ENC-01
IOAI-01
IOAI-01
IOAI-01
IOAI-01
IOAI-01
0.90 A
0.50 A
1.90 A
Consumption
0.20 A
0.20 A
0.10 A
0.10 A
0.10 A
0.10 A
0.10 A
(1)
In these examples, the capacity of the internal power supply has been exceeded, and care must be taken to ensure that the external power
supply is energized before the inverter.
(2)
Prefix “CFW900” has been omitted.
44 | CFW900
Summary of Contents for CFW900
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