DMP Electronics 734, Installation And Programming Manual

Page: 7 / 23

734 Installation and Programming Guide | Digital Monitoring Products 5
Isolation Relay (Optional)
The Form C relay can control a device that draws less than 10 Amps of current. If a device draws more than
10 Amps of current, or the sum of all devices controlled by the Form C relay exceeds 10 Amps, an isolation relay
must be used. Refer to Figure 5 and Figure 6 for isolation relay wiring.
4
5
Install the 333 Suppressor
Use the included 333 suppressor with the 734 to suppress any surges caused by energizing a magnetic lock or
door strike.
Install the 333 across the module’s C (common) and NO (normally open) or NC (normally closed) terminals.
If the device being controlled by the relay is connected to the NO and C terminals, install the suppressor on the
NO and C terminals.
Conversely, if the device is connected to the NC and C terminals, install the 333 Suppressor on NC and C
terminals.
The suppressor wire is non-polarized. Install the suppressor as shown in Figure 7.
Status LEDs
The 734 board contains three status LEDs.
▶ The Red LED turns on for the same duration as the door strike relay.
▶ The Yellow LED turns on for one second to indicate receipt of a valid input determined by card format
programming.
▶ The Green LED indicates data sent to the panel.
Magnetic Lock
– +
Isolation Relay
NO C NC
To Panel
Keypad
Bus
Common
RED
PROG
PIEZO
RED KYPD IN RED KYPD OUT
RED
WIEGAND
READ LED
DATA
XMT LED
RELAY
ON
YEL GRN
Normally Open
12/24VDC
Power
Supply
734
Series
Module
Model 333
Suppressor
+
+
+
–
+ –
Magnetic Lock
– +
Mag Lock
NO C NC
Normally Closed
+
–
Figure 5: Magnetic Lock with an Isolation Relay
Magnetic Lock
– +
Isolation Relay
NO C NC
To Panel
Keypad
Bus
Common
RED
PROG
PIEZO
RED KYPD IN RED KYPD OUT
RED
WIEGAND
READ LED
DATA
XMT LED
RELAY
ON
YEL GRN
Normally Open
Normally Open
12/24VDC
Power
Supply
734
Series
Module
Model 333
Suppressor
+
+
–
+
+
–
+ –
Magnetic Lock
– +
DC Door Strike
NO C NC
Figure 6: Door Strike with an Isolation Relay
RED
PROG
PIEZO
RED KYPD IN RED KYPD OUT
RED
WIEGAND
READ LED
DATA
XMT LED
RELAY
ON
YEL GRN
734
Series
Module
Model 333
Suppressor
+ –
NO C NC
Figure 7: 333 Suppressor Installation on the 734