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Appendix A
A.2 I/O Connections and Wiring
FUH1010 IP65 NEMA 4X Precision Volume
Operating Instructions, 01/2013, A5E32122003-AA
175
Table A- 10 Open Collector User Resistor Recommendations
User Supply
Voltage (V DC)
External Resistor
(Ohms)
Expected
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 are Open Collector Outputs that require external pull-up resistors for
operation. See table for External Supply Voltage and suggested resistor value and ratings.
Maximum current into the transistor is 100 mA. 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.
Table A- 11 Input/Output Wiring (TB3) - 7ME39400AL04 Expanded I/O Module
Pin#
Signal
Definition
Description
Function
Dual Path Only
Function
Quad Path Only
1
K1 A
Relay 1 Normally Open
2
K1 B
Relay 1 Normally Closed
3
K1 C
Relay 1 Common
Relay 1
Alarm or control
functions set by CH
3.
Alarm or control
functions set by
CH5.
4
GND
Digital Return (GND)
DGND
5
K2 A
Relay 2 Normally Open
6
K2 B
Relay 2 Normally Closed
7
K2 C
Relay 2 Common
Relay 2
Alarm or control
functions set by CH
3.
Alarm or control
functions set by
CH5.
8
K3 A
Relay 3 Normally Open
9
K3 B
Relay 3 Normally Closed
10
K3 C
Relay 3 Common
Relay 3
Alarm or control
functions set by CH
3.
Alarm or control
functions set by
CH5.
11
GND
Digital Return (GND)
DGND
12
K4 A
Relay 4 Normally Open
13
K4 B
Relay 4 Normally Closed
14
K4 C
Relay 4 Common
Relay 4
Alarm or control
functions set by CH
3.
Alarm or control
functions set by
CH5.
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