Panasonic AQ-G, Руководство пользователя

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Cautions for Use of Solid State Relays
ASCTB400E 201806-T
Thermal Design
Protection Circuit
SSRs used in high-reliability equipment require careful thermal
design. In particular, junction temperature control has a
significant effect on device function and life time. The rated load
current for PC board-mounting SSRs is defined as the maximum
current allowable at an ambient temperature of 40
°
C 104
°
F
(30
°
C 86
°
F ) and under natural cooling. If the ambient
temperature exceeds the SSRs derating temperature point
[40
°
C 104
°
F (30
°
C 86
°
F )], load current derating in accordance
with the load current vs temperature diagram becomes
necessary.
If adjacent devices act as heat sources, the SSR should be
located more than 10 mm away from those devices.
SSRs with a 5 A rating or more must be used with the dedicated
heat sinks listed in Table 1 or equivalents. To ensure adequate
thermal conduction, apply thermal conductive compound (Ex.
Momentive Performance Materials Inc. YG6111 or TSK5303) to
the SSR’s mounting surface.
For information on external heat sinks for our SSRs and their
mounting method, refer to “Data and Cautions for Use for
respective relay”.
Table 1 Dedicated on-board heat sinks
*It is possible to mounting on the DIN rail
Type Heat sink Load current
AQ10A2-ZT4/32VDC AQ-HS-5A 10A
AQ-J (10A)
AQP-HS-SJ10A*
10A AQP-HS-J10A
AQP-HS-SJ20A*
AQ-J (15A)
AQP-HS-SJ10A*
15A AQP-HS-J10A
AQP-HS-SJ20A*
AQ-J (25A)
AQP-HS-SJ10A*
20A AQP-HS-J10A
AQP-HS-SJ20A*
AQP-HS-J25A 25A
AQ-A (15A)
AQP-HS-J10A
15A
AQP-HS-SJ20A*
AQ-A (25A)
AQP-HS-30/40A
25A AQP-HS-J10A
AQP-HS-SJ20A*
AQ-A (40A)
AQP-HS-J10A
30A
AQP-HS-SJ20A*
AQP-HS-30/40A
40A
AQP-HS-J25A
AQ-A DC (10A)
AQP-HS-SJ20A* 8A
AQP-HS-J25A 10A
AQ-A DC (30A) AQP-HS-SJ20A* 30A
High-reliability SSR circuits require an adequate protection
circuit, as well as careful study of the characteristics and
maximum ratings of the device.
1. Over-Voltage Protection
The SSR load power supply requires adequate protection
against over-voltage errors from various causes. The methods of
over-voltage protection include the following:
1) Use devices with a guaranteed reverse surge withstand
voltage
(controlled avalanche devices, etc.)
2) Suppress transient spikes
Use a switching device in the secondary circuit of a transformer
or use a switch with a slow opening speed.
3) Use a surge absorption circuit
Use a CR surge absorber or varistor across the load power
supply or SSR.
Special care must be taken so power on/off surges or external
surges do not exceed the device’s rated load voltage. If a surge
voltage exceeding the device’s rated voltage is anticipated, use
a surge absorption device and circuit (e.g. a ZNR from
Panasonic Corporation).
Choosing the rated voltage of the ZNR
(1) Peak supply voltage
(2) Supply voltage variation
(3) Degradation of ZNR characteristic (1 mA
±
10%)
(4) Tolerance of rated voltage (
±
10%)
For application to 100 V AC lines, choose a ZNR with the
following rated voltage:
(1)
×
(2)
×
(3)
×
(4) = (100
×
M
2)
×
1.1
×
1.1
×
1.1 = 188 (V)
W
L
3.0 max.
T
0.8 dia.
20.0 min.
.118 max.
.031 dia.
.787 min.
H
D
D:
T:
H:
W:
17.5 dia. max.
6.5 max.
20.5 max.
7.5
±
1
(Unit: mm inch )
.689 dia. max.
.256 max.
.807 max.
.298
±
.039
Example of ZNR (Panasonic)
Types
Varistor voltage
Max. allowable circuit
voltage
Max. control
voltage
Max. average
pulse electric
power
Withstanding energy Withstanding surge current
Electrostatic
capacitance
(Reference)
(10/1000
μ
s) (2ms) 1time
(8/20
μ
s)
2time
V1mA (V) ACrms (V) DC (V) V50A (V) (W) (J) (J) (A) (A) @1KHz (pF)
ERZV14D201 200 (185 to 225) 130 170 340 0.6 70 50 6,000 5,000 770
ERZV14D221 220 (198 to 242) 140 180 360 0.6 78 55 6,000 5,000 740
ERZV14D241 240 (216 to 264) 150 200 395 0.6 84 60 6,000 5,000 700
ERZV14D271 270 (247 to 303) 175 225 455 0.6 99 70 6,000 5,000 640
ERZV14D361 360 (324 to 396) 230 300 595 0.6 130 90 6,000 4,500 540
ERZV14D391 390 (351 to 429) 250 320 650 0.6 140 100 6,000 4,500 500
ERZV14D431 430 (387 to 473) 275 350 710 0.6 155 110 6,000 4,500 450
ERZV14D471 470 (423 to 517) 300 385 775 0.6 175 125 6,000 4,500 400
ERZV14D621 620 (558 to 682) 385 505 1,025 0.6 190 136 5,000 4,500 330
ERZV14D681 680 (612 to 748) 420 560 1,120 0.6 190 136 5,000 4,500 320
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