SDC 7500 SERIES HiTower Z, S, I, D, P & T - Manual (Page 2)

P:\INSTALLATION INST\Electrified Lockset\INST-Z7500.vsd REV E 01-13 Page 2
Wiring assignments for the optional SC-10 cable with socket connectors are the same.
VOLTAGE
RESISTANCE IN
OHMS 5% +-
AMPS
24VDC
54.5
.44
24VAC
13.6
.45
115VAC
293
.20
Important Note: Because of design, field OHM tests of AC
solenoids may produce erratic readings and cannot be
used to determine the solenoids condition.
The 7500 Series is a (PL) Electric Power to Lock Unit which is failsafe in that it unlocks when power is removed. The most commonly used function is
the 7540 and 7550 models which are locked when energized on the outside and free on the inside egress. Models 7510, 7520 & 7530 lock on both
sides when energized.
(1) Power on controller plunger does not throw. 1A Insufficient voltage 1A Check voltage with a meter at the lock
farthest from source with all locks energized.
Meter should indicate the same voltage
stamped on the solenoid body. If voltage is
low, either too small of a wire gauge was
used or there is too great of a load on the
line.
7510 Mortise lock is unlocked by
means of a remote switch.
Suggested: storerooms, records,
utility, tool cribs, man trap.
FUNCTIONS
7530 Mortise lock is unlocked by
a remote switch or by means of
a key from either side.
Suggested: communicating locks, man
trap 7550 Mortise lock is unlocked by
remote switch or by means of
an outside key or by rotating the
inside lever.
Suggested: stairtower doors, classrooms,
laboratories, offices, man trap.
7520 Mortise lock is unlocked by
remote switch or by means of
an outside key.
Suggested: storerooms, records,
utility, tool cribs, man trap. 7540 Mortise lock is unlocked by
a remote switch or by rotating
the inside lever which retracts
the mortise latch bolt and the
auxiliary latch.
Suggested: stairtower doors, control
centers, vaults, man trap.
1B Binding caused by uneven
plunger adjustment.
1B Adjust plunger evenly.
1C Electric portion wired wrong. 1C Review wiring diagram on side of lock &
instruction sheet.
(2) Latch bolt throws only part way, lock
chatters or buzzes.
2A Door alignment does not
permit latch bolt to enter
strike
2A Proper alignment must be achieved by correctly
hanging the door in a properly installed frame.
Modifying the lock and strike will not remedy the
problem.
Modification will only void UL listing and
warranty.
+
-
COM
N/C
N/O
RED
WHT
BLU/BLK
YEL/BLK
ORG/BLK
Voltage and current rating stamped on solenoid
Ground screw is provided on 115 VAC locks
Indicates door open
Common
Indicates door latch
BLU/BLK
YEL
ORG Indicates door unlocked
Common
Indicates door secure
Optional Latched & Deadlocked Status
SPDT 5 Amps @ 125VAC
Optional Latch Status Sensor
SPDT 5 Amps @ 125VAC
(3) Inside lever is locked, outside is free. 3A Incorrect handing 3A Remove mortise lock and reverse hand.
(4) Latch position switch does not signal
properly.
4A 9A adjustment is off. 4A Adjust sensor. See Step 1 of instructions.
TROUBLE SHOOTING HiTower 7500 SERIES R
SOLUTIONS CAUSE PROBLEM