GHM Martens ST125M, Руководство по эксплуатации

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BA_MA_STTV125M_EN_V1.2
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Universal isolating amplifier TV125M / ST125M
Figure 9 Transmitter power supply, characteristic curve
4.2 Status-LED
In error-free operation the front-side two-colour status LED illuminates green.
When there is an error, the status LED issues a blinking sequence consisting of a specific number of green
and red light pulses:
4.3 Output
Behaviour of the output when a range is undercut and exceeded:
Output Modulation range Under-modulation Over-modulation
0…10 V
-
0,1…10,25 V linear
-0,2 V 10,5 V
2…10 V 1,9…10,25 V linear
1,8 V 10,5 V
0…20 mA
-
0,2…20,5 mA linear
-0,4 mA 21 mA
4…20 mA 3,8…20,5 mA linear
3,6 mA 21 mA
Table 10 Modulation range
4.4 Transmitter power supply (ST125, only)
Characteristic curve and output data (terminals 50 and 51):
Error circuit Blinking sequence Cause
Green Red
System 0 1 Electronic defective
Auxiliary
voltage 0 1 Supply voltage of the processor is too low
0 1 Auxiliary voltage < 18V
Input 2 1 Under-modulation (< -0.3mA / -0.15V or < 3.7mA / 1.85V)
2 2 Over-modulation (> 20.8mA or > 10.4V)
Output 3 1 Under-modulation (< -0.2mA / -0.1V or < 3.8mA / 1.9V)
3 2 Over-modulation (> 20.5mA or > 10.25V)
Table 9 Status messages
U
N
> 15 V,
I
N
= 20 mA,
R
i
=
300 Ω,
U
M
= ca. 23,5 V,
I
M
= ca. 28 mA,
U
0
= 25,9 V
I
0
= 92,6 mA,
P
0
= 598 mW