Dynalco SWT-2000 Speed Switch/Speed Transmitter - Manual (Page 8)

Operating Instructions SWT-2000 DYNALCO
4
Input signal for adaptive
trigger min. 500mVpp
(+/-10%) 180mV
RMS
• Max. Voltage: 80V
RMS
(226V
pp
)
• DC- decoupling
• The Trigger level automatically adapts itself to the input signal in the range
+250mV to +2V. The Adaptive Trigger improves the signal to noise immunity
e.g. where electromagnetic sensors are used.
M in. T rigger level: 500 mVpp +/-10% = 180 mV RMS +/-10% U min. = f(Frequency)
0.1
1.0
10.0
100.0
1000.0
0.
01 0.
1 1
10
100
1000
1
0000
10
0000
Freque ncy (Hz)
S
e
nsor
S
ig
n
a
l (
V
pp
)
O.K.
NOT O.K.
Sensor supply • +14V +/- 0.5V, max. 35mA / Short circuit proof
• If the current limit has been activated, then the circuit needs to be
disconnected to reset the protection.
Typical voltage curve as a function of sensor current
Sensor voltage = f (Sensor current)
13.6
13.8
14.0
14.2
14.4
14.6
14.8
0 5 10 15 20 25 30 35 40 45
Sensor current (mA)
S
e
n
s
o
r vo
lt
ag
e (
V
)
Integral pull up resistor 1000 Ω to +14V (Only for 2 wire active e.g. NAMUR sensors)
Screen Terminals are provided for each sensor cable screen (Sh1 and Sh2). These
terminals are internally connected to the sensor input / supply 0V.