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Table A- 10
Open Collector User Resistor Recommendations
User Supply
Voltage (VDC)
5
9
12
18
24
28
36
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 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.
Table A- 11
Input/Output Wiring (TB3) - 7ME39400AL04 Expanded I/O Module
Pin#
Signal
1
K1 A
2
K1 B
3
K1 C
4
GND
5
K2 A
6
K2 B
7
K2 C
8
K3 A
9
K3 B
10
K3 C
FUS1010 IP65 NEMA 4X & IP66 NEMA 7 Quick Start
Operating Instructions, 01/2013, A5E03086486-AC
External Resistor
(Ohms)
270
510
680
1000
1500
1800
2400
Definition
Relay 1 Normally Open
Relay 1 Normally Closed
(7ME39400AL04 only)
Relay 1 Common
Digital Return (GND)
Relay 2 Normally Open
Relay 2 Normally Closed
(7ME39400AL04 only)
Relay 2 Common
Relay 3 Normally Open
Relay 3 Normally Closed
(7ME39400AL04 only)
Relay 3 Common
Expected
Current Draw (mA)
18.5
17.6
17.6
18
16
15.5
15
Description
Function
Dual Path Only
Relay 1
Alarm or control
functions set by
CH 3.
DGND
Relay 2
Alarm or control
functions set by
CH 3.
Relay 3
Alarm or control
functions set by
CH 3.
Appendix
A.1 I/O Connections and Wiring
Recommended Resistor
Wattage (Watts)
1/2
1/2
1/2
3/4
1
1 1/4
1 1/4
Function
Quad Path Only
Alarm or control
functions set by CH 5.
Alarm or control
functions set by CH 5.
Alarm or control
functions set by CH 5.
63
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