Hitachi EH-A14EDR, Руководство по применению

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Chapter 2 Specifications
2
– 8
2.7 Output specifications
(1) Relay output (All output on MV-*64DR, MV-*40DR, MV-*20DR)
Item Specifications Internal circuit diagram
Rated load voltage 5 to 250V AC, 5 to 30V DC
Minimum switching current 1 mA (5V DC)
*1
Maximum
load current
1 circuit 2A (24V DC, 240V AC)
1 common 5A
Output response
time
OFF → ON
15 ms (max.)
ON → OFF
15 ms (max.)
Number of outputs
64-point type: 24
40-point type: 16
20-point type: 8
Common
64-point type: 9
40-point type: 5
20-point type: 2
Surge removing circuit None
Fuse None
Insulation system Relay insulation
Output display LED indication
External connection Removable type screw terminal block (M3)
Externally supplied power
(for driving the relays)
Not required
Contact life
*2
20,000,000 times (mechanical)
200,000 times (electrical: 1.5A)
Insulation
1,500V or more (external-internal)
500V or more (external-external)
*1: Minimum switching current is the unofficial value as a guide. This value may vary with the switching frequency,
environmental conditions, etc..
*2: Refer the diagram below
■ Life of relay contact
Life curve of relay contact
500
100
10
1
0.1 0.2 5
50
20
10 1 0.5
1000
0.3 3 2
30 V DC
τ
=7ms
250 V AC cos
φ
=0.4
30 V DC/250 V AC R load
S
witchin
g
li
fe
(
10,
000
ti
mes
)
Shut-off current (A)
Life of the contact is also in squared reverse proportion to the
current, so be aware that interrupting rush current or directly driving
the capacitor load will drastically reduce the life of the relay.
0
1
C
In
te
rn
a
l
c
ir
c
u
it