Operation
20
201202 / 9170613310
2018-11-20·BA00·III·en·09
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Isolating Switching Amplifier
N-132
9.2
Parameterizations
DIP switch positions for line fault detection LF and inversion of the direction of action INV
*) Standard setting upon delivery
10
Operation
10.1 Operation
Operating states
Line fault detection LF
Direction of action inverted INV
Deactivated/OFF *)
Activated/ON
Deactivated/OFF *)
Activated/ON
Channel 1
07456E
07455E
15527E
15528E
Channel 2
The DIP switch positions "LF" and "INV" may also be changed during
operation – in Zone 2 and when dealing with connected, intrinsically safe input
signals.
Input
Signal
Output state in case of
"inverted direction of action" (INV1/2)
OFF
ON
line fault detection LF = deactivated (LF1/2 = "OFF")
Initiator high-impedance /
contact is opened /
wire breakage
I
E
(
1.2 mA
Relay is not energized /
electronic output blocks
Relay is energized /
electronic output
conducts
Initiator low-resistance /
contact is closed /
short-circuit
I
E
)
2.1 mA
Relay is energized /
electronic output
conducts
Relay is not energized /
electronic output blocks
line fault detection LF = activated (LF1/2 = "ON")
Wire breakage
I
E
(
0.05 to 0.35 mA
Relay is not energized /
electronic output blocks
Relay is not energized /
electronic output blocks
Initiator high-impedance /
contact is opened
I
E
= 0.35 to 1.2 mA
Relay is not energized /
electronic output blocks
Relay is energized /
electronic output
conducts
Initiator low-resistance /
contact is closed
I
E
= 2.1 to 5 mA
Relay is energized /
electronic output
conducts
Relay is not energized /
electronic output blocks
Short circuit
R
E
< 100 to 360 Ω
Relay is not energized /
electronic output blocks
Relay is not energized /
electronic output blocks
LF1
INV1
LF2
INV2
ON
OFF
1
2
LF1
INV1
LF2
INV2
ON
OFF
1
2
LF1
INV1
LF2
INV2
ON
OFF
1
2
LF1
INV1
LF2
INV2
ON
OFF
1
2
Содержание N-132
Страница 47: ...Notizen Notes ...