Alstom GEM80-400 Series - Page 53

GEM80-400 1. Introduction
Issue 3 04/99 ALSPA GEM80-400 CONTROLLER TECHNICAL MANUAL Page 1-17
1.11. GEM80-400 Controller Backplanes Description
Some early controllers may be fitted with backplanes which differ slightly from those
shown in figures 1.12 to 1.15.
1.11.1. Upper Backplane
Figures 1.12 and 1.13 detail, respectively, the Upper Backplane of the Standard and
Enhanced Controllers.
1. Eight connectors for I/O modules (SK1 - SK8)
9. Power terminal block (TB1)
2. Module interlock resistors (R1 - R8
0VG - 0V
3. Output enable circuit links (R14 and R15)
VPV - Verification Power Valid - not used
4. Earth terminal (E1
R5 +15V - Verification Input
5. Basic I/O ribbon cable connector (PL1)
R2 +15V - Not used
6. PL3 is not used
R1 +15V - Basic Input
7. PL2 is not used
+15VG - 15VG Output
8. Verification I/O ribbon cable connector (PL5)
+15VG -
+5VG - 5VG Output
0VG - 0V
10. Module interlock/enable terminal block (TB2)
11. Power supply module connector (SK9)
INT+ EN+
2. Address decoder switches (S1 - S3)
INT- EN-
13. Processor module connector (SK10)
14. PL4 not fitted
Figure 1.12 - GEM 80-400 Standard Controller Upper Backplane Type 20X
9290 with exploded view of right-hand end