Fail-Locked; Fail-Locked Drawing (Less Than 2A Lock); Fail-Open; Figure 7 - Fail Locked Drawing - TDSi EXcel4 User Manual

2.7 Fail-locked

This kind of lock requires power to unlock:
EXcel terminal
2.7.1

Fail-locked Drawing (Less than 2A lock)

ACU Connections
for a fail-locked
Lock Release
Door Door
1 2
N/O 21 35
Com 20 34
Shield or Ground wire
must NOT be connected to
ACU chassis if lock
release is mounted on a
grounded metal surface
2.7.2

Fail-open

This kind of lock is locked when power is applied:
EXcel terminal
Lock connection
20 Door 1 Lock relay Common
pole
21 Door 1 Lock relay n/o
34 Door 2 Lock relay Common
pole
35 Door 2 Lock relay n/o
47 Door 3 Lock relay Common
pole
48 Door 3 Lock relay n/o
53 Door 4 Lock relay Common
pole
54 Door 4 Lock relay n/o
Door Door
3 4
48 54
47 53
To Separate appropriate
Connecting a fail locked (i.e. powered -open)

Figure 7 - Fail locked drawing

Lock connection
19 Door 1 Lock relay n/c
20 Door 1 Lock relay Common pole
33 Door 2 Lock relay n/c
34 Door 2 Lock relay Common pole
46 Door 3 Lock relay n/c
47 Door 3 Lock relay Common pole
52 Door 4 Lock relay n/c
53 Door 4 Lock relay Common pole
EXcel4 Controller
Lock Release
Suppressor
Power Supply
Shield or Ground wire
should be connected to
lock release casing if
possible
Page 15