Nordson 303 779B, Customer Product Manual

Page: 48 / 176

Description
B 1-8
E
1998 Nordson Corporation
All rights reserved
303 779B
Issued 11/98
Manual 12-44
The 3
∅
transformer (T113) supplies eighteen power lines (two lines
each; one of each is fused) from fuses FU112, FU113, FU114.
1. 12 Vac to SCR controllers and backplane card
2. 12 Vac to SCR controllers and backplane card
3. 12 Vac to SCR controllers and backplane card
4. 120 Vac to the monitor
5. 120 Vac to E-Stops and contactor coils
6. 15 Vac spare
7. 15 Vac (rectified to +20Vdc) to backplane
8. 15 Vac (rectified to -20Vdc) to backplane
9. 120 Vac to 5 Vdc power supply
From contactor CON212, all three phases of power are brought to the
zone circuit breaker banks for further distribution to the SCRs, heating
elements and lamps. All zones are individually protected with circuit
breakers. Neutral is also brought to a distribution block near the main
disconnect.
5. Electrical System
(contd.)