4
Noralsy Speaker MIHP/6
Common - NOR
= Relay closes (makes circuit)
when door release button on
handset or internal exit button is
pressed. This setting is used
when operating a fail secure
(locked) - power to unlock
electric release.
J1
J5
J4
J8
J2
J3
J9
RV1
1 2
1 2
+ –
1 2 3 4 5
INV
NOR
Potentiometer
12V DC
Power Input
If controlling an
automation system,
see note.
Speaker MIHP/6
P1
P3
P2
–
+
–
+
–
+
P1
= For adjusting relay J3 operating time (output
time) to lock or automation equipment.
RV1 = Cut out only if relay J3 is connected directly to
an automation system.
Common - INV
= Relay opens (breaks) circuit
when door release button on
handset or internal exit button is
pressed. This setting is used
when operating a fail safe (open)
- power to lock electro-magnet
or electric release.
EMEX
POWER SUPPLY
+12v
0v
Magnet
or Fail Safe
Release
1 2
J3
Varistor
If your fail safe locking requires an Emergency Break
Glass exit device ref. EMEX (normally closed contact) in
order to comply with relevant fire and safety regulations,
please fit as shown.
J3
1 2
J9
INV
NOR
J3
J9
1 2
INV
NOR
Fail Secure (N.O.)
Fail Safe (N.C.)
Jumper Settings J9 for Relay J3
ELEC/INST/300A
Protection Varistor or Diode
The use of a varistor or diode protects electrical equipment from
transient voltage spikes.
+
–
+
–
Diode
Varistor
DC release
Fail Secure or
Fail Safe
K = C
A = Anode –
Electro
Magnet
AC or DC
release
Electro
Magnet
Fit the diode ref. IN4001
close to the DC release
or electro-magnet.
Respect polarity of the
diode. Incorrect fitting of
a diode will cause a
short circuit.
Fit the varistor close to the
AC or DC release or the
DC magnet.
Varistor is polarity
insensitive.
+
–
K
A
–
K
A
+
+
or
D
D
D
D
V
V
or
–
