EDI DEFLECTOMETER LMD301 Посібник з експлуатації - Сторінка 13
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4.5 LOOP INPUT (LIGHTNING PROTECTION)
The loop input incorporates lightning and transient protection devices and the loop
oscillator circuitry is transformer-isolated for each channel. The lightning protection will
withstand the discharge of a 10uF capacitor charged to 2,000V across the loop inputs or
between a loop input and Earth Ground. The transformer isolation allows operation with a
loop which is grounded at a single point.
4.6 RESPONSE TIMING
4.6.1 LMD301 AND LMD301T
Sensitivity Level
9
8
7
6
5
4.6.2 LMD301S (SOLID-STATE OUTPUTS)
Sensitivity Level
9
8
7
6
5
4.7 LMD301(T) CONNECTOR PIN ASSIGNMENTS
Pin
A
B
C
D
G
H
N.O. is Normally Open, N.C. is Normally Closed.
Relay Contacts are shown with power applied, loops connected and no vehicle present.
Connector mates with MS3106A-18-1S or equivalent.
4.8 LMD302(T) CONNECTOR PIN ASSIGNMENTS
Pin
Channel 1 Function
A
Neutral (AC-)
B
Ch 1 Output Relay Common (Emitter)
C
Power (AC+)
D
Channel 1 Loop Input
E
Channel 1 Loop Input
Eberle Design Inc.
LMD301, LMD302, and LMD304
Series Operations Manual
Response
32-49 ms
20-30 ms
17-26 ms
17-26 ms
17-26 ms
Response
25-38 ms
13-19 ms
11-16 ms
11-16 ms
11-16 ms
Function
Neutral (AC-)
Ch 1 Output Relay Common (Emitter)
Power (AC+)
Channel 1 Loop Input
E
Channel 1 Loop Input
F
Ch 1 Output Relay N.O. (Collector)
Ch 1 Output Relay N.C.
Earth Ground
I
No Connect
J
Ch 1 Timer Control (LMD301T)
Sensitivity Level
4
3
2
1
--
Sensitivity Level
4
3
2
1
--
Pin
Channel 2 Function
A
No Connect
B
Ch 2 Output Relay Common (Emitter)
C
No Connect
D
Channel 2 Loop Input
E
Channel 2 Loop Input
Response
17-26 ms
17-26 ms
17-26 ms
17-26 ms
--
Response
11-16 ms
11-16 ms
11-16 ms
11-16 ms
--
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