Testing And Replacing D2112E Fuses; External Relays; Terminals 11 And 12 - Radionics D2112 Installation Manual

Testing and Replacing D2112E Fuses

The D2112E's Aux Power and Bell outputs are
protected by 2 Amp fast blow fuses. The fuses are
5 mm x 20 mm, 2 Amp Fast Blow (Radionics Part #
57-03570-008). To test the fuses, use a Volt/Ohm
meter to follow these steps:
1. Remove the fuse from the socket.
2. Switch the meter to measure Ohms.
3. Attach the meter leads to each side of the fuse.
4. If the meter does not change when you
connect the leads to the fuse, the fuse is open
(blown). Replace the blown fuse with a 5 mm x
20 mm, 2 Amp Fast Blow fuse.
5. If the meter measures 0 Ohms, the fuse is
closed (normal), and does not need to be
replaced.

External Relays

Terminals 11 and 12

You can program terminals 11 and 12 to provide
outputs for two external relays. Review the RELAYS
Group in the D2112/D2112E Program Entry Guide
for a description of the relay functions available.
Connect a D133 Relay Module for each of the
external relay outputs you intend to use. Figure 5
shows the connections.
Warning: Install D133 modules connected to
terminals 11 and 12 in the enclosure with the panel
as shown in Figure 1. Do not connect wiring for
external devices directly to terminals 11 or 12.
74-07111-000-D 1/96
4
3
2
1
Aux Power Fuse
2 Amp Fast Blow
D2112/D2112E Installation Manual
Page 9
Alarm Output Fuse
2 Amp Fast Blow
Figure 4: D2112E Fuse Locations
External Relay 1
D133
Relay Module
N/O 1 (Closes to COMM1 when relay is activated.)
COMM1 (Common)
N/C 1 (Opens from COMM1 when relay is activated.)
X1- (Connect to terminal 11 for External Relay 1)
X1+ (Connect to terminal 9.)
External Relay 2
D133
Relay Module
11 12 13 14
10
9
8
7
Figure 5: External Relay Wiring
N/O 1
COMM1
N/C 1
X1- ( Connect to terminal 12
for External Relay 2)
X1+
20
15 16 17 18 19
© 1995 Radionics