Digital Outputs - Graco PCF Instructions And Parts

Appendix B - DGM Connection Details

Digital Outputs

The digital outputs function only when power is supplied to pins 27, 68, and 69 and there is a ground connection to
pin 70. See Pin References, page 96, for details. The digital output is rated at 0-30 Vdc, and requires an NEC Class
2 power supply connected to pin 27 for supply bank 1, pin 69 for supply bank 2, and pin 68 for supply bank 3. The
DGM provides optical isolation as shown in the following illustration.
• Pins: 9-20, 28-39
• Type: Sourcing
Microcontroller
98
Discrete Gateway
Isolated Logic ICs
Optical
Isolator
• Maximum continuous current output: 350 mA
(sourced from customer supply)
• Recommended continuous current: 100 mA
Customer Automation
D-Sub Pin 51 (Isolated
Logic Supply)
D-Sub
Pin 27
Digital
Output
1-8
LOAD LOAD
D-Sub
Pin 69
Digital
Output
9-16
LOAD LOAD
D-Sub
Pin 68
Digital
Output
17-24
LOAD LOAD
D-Sub Pin 70
(Isolated Ground)
Digital Output
Supply Bank 1
Digital Output
Supply Bank 2
24VDC 24VDC
Digital Output
Supply Bank 3
24VDC 24VDC
313377B