Siemens Sitrans F Series - Figure A-5 7 ME39400 AL04 Main Board I;O Wiring; Table A- 5 Open Collector User Resistor Recommendations

Appendix A
A.1 I/O Connections and Wiring
FUT1010 IP65 NEMA 4X & IP66 NEMA 7 Liquid Quick Start
Operating Instructions, 1/2013, A5E02639182-AC
47
+5V
+5V
PG1
PG3
PG4
1
32
1
32
PG2
DPGEN_1-Ø1
DPGEN_1-Ø2
DPGEN_2-Ø2
DPGEN_2-Ø1
2
3
4
5
TTL/CMOS
2
3
4
5
TTL/CMOS
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,2&211(&7,21%2$5'
0$,1%2$5'
7%'3*(1B
77//2*,&
5(9(56()/2:
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77/3*(16,*1$/
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Figure A-5 7ME39400AL04 Main Board I/O Wiring
Table A- 5 Open Collector User Resistor Recommendations
User Supply External Resistor Expected
Voltage (VDC) (Ohms) Current Draw (mA)
Recommended Resistor
Wattage (Watts)
5 270 18.5 1/2
9 510 17.6 1/2
12 680 17.6 1/2
18 1000 18 3/4
24 1500 16 1
28 1800 15.5 1 1/4
36 2400 15 1 1/4
Note
TB2-9 and TB2-11 a
re Open Collector Outputs that require external pull-up resistors for
operation. See table above for External Supply Voltage and suggested resistor value and
ratings. Maximum current into the transistor is 100mA. Maximum Voltage is +36 VDC.
NOTICE
Transistor Damage
Negative voltages with respect to ground will permanently damage transistors.
Use caution when applying power to circuit boards.