
Lock Functions
40H Series Service Manual 3–15
NXEL–Electrically locked–Fail safe lock NXEU–Electrically unlocked–Fail secure lock
Latchbolt operated by:
■ outside lever when power is
removed from the solenoid
■ inside lever
Latchbolt is deadlocked by an
auxiliary latch
Outside lever locked by:
■ applying power to the solenoid;
remains locked while power is
continuously applied
Outside lever unlocked by:
■ removing power from the
solenoid
Inside lever is always unlocked
Latchbolt operated by:
■ outside lever when power is
applied to the solenoid
■ inside lever
Latchbolt is deadlocked by an
auxiliary latch
Outside lever locked by:
■ removing power from the
solenoid
Outside lever unlocked by:
■ applying power to the solenoid;
remains unlocked while power is
continuously applied
Inside lever is always unlocked
TDEL–Electrically locked–Fail safe lock TDEU–Electrically unlocked–Fail secure lock)
Latchbolt operated by:
■ outside key
■ outside lever when power is
removed from the solenoid
Latchbolt is deadlocked by an
auxiliary latch
Deadbolt operated by:
■ outside key
Outside lever locked by:
■ applying power to the solenoid;
remains locked while power is
continuously applied
Outside lever unlocked by:
■ removing power from the
solenoid
Inside lever is always unlocked
Deadbolt and latchbolt
retracted simultaneously by:
■ inside lever
■ outside lever when power is
removed
Latchbolt operated by:
■ outside key
■ outside lever when power is
applied to the solenoid
Latchbolt is deadlocked by an
auxiliary latch
Deadbolt operated by:
■ outside key
Outside lever locked by:
■ removing power from the
solenoid
Outside lever unlocked by:
■ applying power to the solenoid;
remains unlocked while power is
continuously applied
Inside lever is always unlocked
Deadbolt and latchbolt
retracted simultaneously by:
■ inside lever
■ outside lever when power is
applied
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