Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 362)

Publication 1760-UM002B-EN-P - March 2005
8-8 Inside Pico GFX-70
The above circuit operates as described in example 1. The signal light is
triggered at Q4 for additional overload monitoring. If Q4 has an overload, it
would “pulse”.
Example 3: Automatic Reset of Error Signal
Figure 8.7 Automatic reset of error signal
The above circuit diagram functions in the same way as Example 2. In addition
the marker M16 is reset every 60 seconds by timing relay T08 (on-delayed, 60
s). Should I16 remain at 1, M16 will continue to be set. Q1 is set briefly to 1
until I16 switches off again.
Expanding Pico GFX-70 You can expand Pico GFX-70 using the 1760-IA12XOW6I and
1760-IB12XOB8 expansion modules.
Install the units and connect the inputs and outputs as described (see Connecting
the Expansion Unit on page 2-16).
You process the inputs of the expansion devices as contacts in the Pico
GFX-70 circuit diagram in the same way as you process the inputs of the basic
unit. The input contacts are assigned the operand designations R1 to R12.
R15 and R16 are the group fault inputs of the transistor expansion unit (see
Monitoring of Short-Circuit and Overload with 1760-IB12XOB8 on page 8-7).
The outputs are processed as relay coils or contacts like the outputs in the
basic unit. The output relays are S1 to S8.
How is an Expansion Unit Recognized?
If at least one
R ..
contact or
S ..
coil/contact is used in the circuit diagram, the
basic unit assumes that an expansion unit is connected.
I 01----M 16-------------------[ Q 01
I 16---------------------------S M 16
M 16---------------------------[ T 08EN
T 08---------------------------R M 16
M 16---------------------------[ Q 04
IMPORTANT
1760-IA12XOW6I provides the outputs S1 to S6. The
other outputs S7, S8 can be used internally.