Fail-Open Drawing (Less Than 2A Lock); Connecting A Dc Lock Rated At More Than 2A; Figure 8 - Fail Open Drawing; Figure 9 - Dc Lock Release Diagram - TDSi EXcel4 User Manual

2.7.3

Fail-open drawing (Less than 2A lock)

ACU Connections
for a fail Open Lock
Release
Door Door
1 2
Com 20 34
N/C 19 33
Shield or Ground wire
must NOT be connected to
ACU chassis if lock
release is mounted on a
grounded metal surface
2.7.4

Connecting a DC Lock Rated at MORE than 2A

Fail
Open Locked
Lockstrike Lockstrike
Relay n/c Relay pole
Relay pole Relay n/o
Cable screen must NOT
be connected to
controller chassis if lock
is grounded
Lock release
Door Door
3 4
47 53
46 52
Connecting a fail open (i.e. power locked)

Figure 8 - Fail open drawing

Fail
Suppressor

Figure 9 - DC lock release diagram

EXcel4 Controller
Lock Release
Suppressor
To Separate appropriate
Power Supply
Shield or Ground wire
should be connected to
lock release casing if
Suppressor
To
Power
Supply
possible
Secondary
Relay
Coil
n/o
pole
Coil
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