A40i, A60i
Manual 0-5466
APPENDIX
A-7
Indicators:
Red LED, D12, indicates PLATE CONTACT whenever contact with the plate is detected..
Rating:
The OK to Move and the Plate Contact Out are relay contacts rated for maximum of 30VAC or DC at 1 amp maximum.
Start SW input requires a switch or relay contact rated for at least + 15VDC at minimum of 10 ma.
1.8K
/START
J1-3
GND
+15VDC
J1-4
Art # A-13619
Arc Voltage Tabs. Series PTC resistors protect in case of short circuit. They add 160-200 ohms between the tabs and
actual arc voltage and work. Total load resistance must be such that current drawn does not exceed 60 ma. Thus
with an open circuit of around 300V the total resistance between J3 & J4 should not be less than 5K ohms. However
the voltage dropped across the protection PTCs with a 5K load would result in about a 10% measurement error.
50K-100K load would be much more practical giving only 1% or less error.
ELECTRODE (- ARC V)
-ARC V (-)
WORK (+)
60mA
R23
82 ohm @ 25C
60mA
R22
82 ohm @ 25C
1
J4
1
J3
60mA
R24
82 ohm @ 25C
60mA
R25
82 ohm @ 25C
GND
Art # A-13617
Art # A-13616
1
2
3
4
5
6
7
8
9
10
11
12
13
14
?
J1
ISO_GND
DIVIDED ARV VOLTAGE (-)
DIVIDED ARV VOLTAGE (+)
COMMON
?
PLATE CONTACT COM
PLATE CONTACT OUT
OK TO MOVE *
OK TO MOVE *
OHMIC
START / STOP (ret)
START / STOP
OHMIC
SENSE
CIRCUITS
ISOLATED
VOLTAGE
DIVIDER
CIRCUITS
+
-
AUTOMATION INTERFACE
PCB (w / OHMIC)
CONTACT?
?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
J2
GND
SW1 ON = Ohmic via TIP
SW2 ON = Collision via TIP
DIVIDER RATIO
-15V
+15V
AUTOMATION INTERFACE (A-SERIES ONLY)
HARNESS TO J609
(11)
(12)
(13)
(14)
(15)
(17)
(20)
(22)
(23)
(24)
(28)
(21)
1
J3
1
J4
WORK (+)
- ARC V (-)
?
?
1 2 3 4 5 6
SW3
* M
0 V AC/DC @ 1A
A
rt # A
-13618
Summary of Contents for A40i
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