Baldor MotiFlex e100 - Recommended Fuses and Circuit Breakers When Sharing the DC Bus

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8-8 Specifications MN1943
8.2.4 Recommended fuses and circuit breakers when sharing the DC bus
When a drive is being used as the source drive to power other drives linked by the DC bus (see
sections 3.2.4 and 3.5), the fuse rating will need to be increased to allow for the total input current.
This is summarized in the following table:
Max. cont.
A
C
i
n
p
u
t
c
u
r
r
e
n
t
Input fuse for
m
a
x
i
m
u
m
c
o
n
t
i
n
u
o
u
s
Circuit
b
r
e
a
k
e
r
A
C
i
npu
t
cu
r
r
en
t
less than (A
RMS
)
max
i
mum con
t
i
nuous
input current
b
r
ea
k
e
r
(C-type)
10 A
Ferraz Shawmut:
A60Q10-2, 10 A (Z212289)
10 A
14 A
Ferraz Shawmut:
A60Q20-2, 20 A (B214338)
16 A
20 A
Ferraz Shawmut:
A60Q25-2, 25 A (Z214842)
25 A
22 A
Ferraz Shawmut:
A60Q25-2, 25 A (Z214842)
25 A
Table 19 - Protection device ratings when sharing the DC bus - 1.5 A ~ 16 A models
Max. cont.
AC input current
less than (A
RMS
)
Input fuse for
maxim um continuous
input current
Circuit
breaker
(B-type)
14 A
Ferraz Shawmut:
A60Q20-2, 20 A (B214338)
20 A
25 A
Ferraz Shawmut:
A60Q30-2, 30 A (E215859)
or
6.600 CP URD 22x58/32 (Z094828)
32 A
28 A
Ferraz Shawmut:
A60Q35-2, 35 A (J216369)
or
6.600 CP URD 22x58/32 (Z094828)
32 A
35 A
Ferraz Shawmut:
A60Q40-2, 40 A (N216879)
or
6.600 CP URD 22x58/40 (S094822)
40 A
40 A
Ferraz Shawmut:
6.600 CP URD 22x58/50 (W094779)
50 A
80 A
Cooper Bussmann:
LPN-RK-80SP
Not recommended.
80 A
Cooper Bussmann:
LPN-RK-80SP
Not recommended.
Table 20 - Protection device ratings when sharing the DC bus - 21 A ~ 65 A models
Recommended fuses are based on 25 °C (77 °F) ambient, maximum continuous control output
current and no harmonic current. Earth/ground wires must be the same gauge, or larger, than the
Line wires.
UL compliance can only be achieved when using the recommended fuses. The use of circuit
breakers does not guarantee UL compliance and provides protection for the wiring only, not the
MotiFlex e100.