Opto-Isolated Outputs - Baldor 29M Installation And Operating Manual

Section 1
General Information

Opto-Isolated Outputs

Optional Customer Supplied
+24VDC Source
Optional Customer
Supplied Relays
MN1230
Four programmable Opto-isolated outputs are available at terminals J1B-20 through
J1B-27. See Figure 3-18.
The Opto-isolated outputs may be configured for sinking or sourcing 50 mA each.
However, all must be configured the same. The maximum voltage from opto output to
common when active is 1.0 VDC (TTL compatible). The Opto-isolated outputs may be
connected in different ways as shown in Figure 3-18.
If the opto outputs are used to directly drive a relay, a flyback diode rated at 1A, 100 V
minimum should be connected across the relay coil.
See Electrical Noise Considerations in Section 5 of this manual.
1. Connect OPTO OUT #1 wires to J1B-20 and J1B-21.
2. Connect OPTO OUT #2 wires to J1B-22 and J1B-23.
3. Connect OPTO OUT #3 wires to J1B-24 and J1B-25.
4. Connect OPTO OUT #4 wires to J1B-26 and J1B-27.
Each Opto Output is programmed in the Level 1 Output programming block.
Figure 3-18 Opto-isolated Output Configurations
+
–
OUT1-
20
OUT1
21
OUT2-
22
OUT2
23
OUT3-
24
OUT3
25
OUT4-
26
OUT4
27
Using External Supply
(Sinking the Relay)
Note: Shows typical flyback diode rated at least 1Amp/100V (1N4002) across each
relay coil (if coil does not have built in flyback).
Optional Customer Supplied
+24VDC Source
Optional Customer
Supplied Relays
Using External Supply
(Sourcing the Relay)
+
–
OUT1-
20
OUT1
21
OUT2-
22
OUT2
23
OUT3-
24
OUT3
25
OUT4-
26
OUT4
27
Installation 3-31