Watlow PPC-2000 - Manual (Page 89)

PPC-2000 User’s Guide Chapter 2: Hardware Installation
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 65
Figure 2.50 Quadrature Connections:
Inputs 1 and 2 Shown.
Connecting Digital Outputs
The digital outputs sink current from a load connected to the
controller’s power supply, or another power supply referenced
to the PPC-2000 power common. Do not exceed +24 volts.
If you must tie the external load to ground, or if you cannot
connect it as shown in Figure 2.51 through Figure 2.53, use a
solid state relay to drive your load.
The outputs conduct current when they are LOW or ON. The
maximum current sink capability is 150mA at 24Vdc. They
cannot ‘source’ current to a load.
Figure 2.51 Powering Output with 5Vdc from
PPC Supply
Q1
Q2
1+
2+
COM
1+
2+
COM
1 (input 1 phase 1+)
2 (input 1 phase 2+)
3 (input 2 phase 1+)
4 (input 2 phase 2+)
37 (COM)
TB50
PS
+ 12-24
-
+ 5
PPC TB50
SSR
Digital
Out