Keybus Operation And Wiring; Current Ratings - Modules And Accessories; Keypad Assignment - DSC PC1555 Installation Manual

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Programmable Output Terminals – PGM1 and PGM2
Each PGM output is designed so that when activated by the
panel, the terminal will switch to ground
Zone Input Terminals – Z1 to Z6
Each detection device must be connected to a zone on the
control panel. We suggest that one detection device be con-
nected to each zone; wiring multiple detection devices to a
single zone, however, is possible. For zone wiring specifics,
please see section 2.8 "Zone Wiring" on page 5.
Telephone Connection Terminals – TIP, RING, T-1, R-1
If a telephone line is required for central station communica-
tion or downloading, connect an RJ-31X telephone jack in the
following manner:
NOTE:Please ensure that all plugs and jacks meet the dimen-
sion, tolerance and metallic plating requirements of 47 C.F.R.
Part 68, SubPart F. For proper operation, no other telephone
equipment should be connected between the control panel and
the telephone company facilities. Do not connect the alarm
panel communicator to telephone lines intended for use with a
fax machine. These lines may incorporate a voice filter which
disconnects the line if anything other than fax signals are
detected, resulting in incomplete transmissions.
2.3

Keybus Operation and Wiring

The Keybus is used by the panel to communicate with all con-
nected modules and vice versa. The red (AUX+) and black
(AUX-) terminals are used to provide power, while the yellow
(YEL) and green (GRN) terminals are clock and data respec-
tively.
NOTE: The four Keybus terminals of the panel must be con-
nected to the four Keybus terminals or wires of all modules.
The following restrictions apply to Keybus wiring:
• Keybus should be run in minimum 22 gauge quad
(0.5mm); two pair twist is preferred.
• The modules should be home-run to the panel but can be
connected in series or T-tapped.
4
PGM1 can sink up to 50mA of
current. Connect the positive
side of the LED or buzzer to
AUX+, the negative side to
PGM1. PGM2 operates simi-
larly to PGM1. However, PGM2
can sink up to 300mA of cur-
rent. If more than 300 mA of
current are required, a relay
must be used.
Please study PGM wiring in
the accompanying diagram.
For a list of the programmable
output options, please see
section 5.11 "PGM Output
Options" on page 20.
• Any module can be connected anywhere along the Key-
bus. You do not need to run a separate Keybus wire for
keypads, etc.
• No module can be more than 1,000'/305m (in wire length)
from the panel.
• Shielded wire should not be used.
Example of Keybus Wiring
NOTE:
Module (A) is correctly
wired
within
1,000'/
305m of wire from the
panel.
Module (B) is correctly
wired
within
1,000'/
305m of wire from the
panel.
Module (C) is NOT wired correctly as it is further than 1,000'/
305m from the panel, in wire distance.
2.4
Current Ratings – Modules and
Accessories
In order for the PC1555 system to operate properly, the power
output capabilities of the main control and the expan-
sion devices must not be exceeded. Use the data pre-
sented below to ensure that no part of the system is
overloaded and cannot function properly.
PC1555 (12 V
)
DC
AUX+: ........550mA: Subtract the listed rating for each key-
pad, expansion module and accessory con-
nected to AUX+ or Keybus.
BELL: .........700mA continuous rating; 3.0A short term. Avail-
able only with standby battery connected.
PC1555 Device Ratings (at 12 V
• LCD5500Z Keypad: 85mA max.
• PC1555RKZ Keypad: 85mA max.
• PC5508Z, PC5516Z, PC5532Z Keypads: 85mA max.
• PC5400 Serial Module: 65mA
• PC5132 Wireless Receiver: 125mA
Other Devices
Please read the manufacturer's literature carefully to deter-
mine the maximum current requirements for each device—
during activation or alarm—and include the proper values for
loading calculations. Connected devices must not exceed
system capabilities during any possible operational mode.
2.5

Keypad Assignment

There are eight available slots for keypads. LED keypads by
default are always assigned to slot 1. LCD5500Z keypads are
always assigned to slot 8. You will need to assign each key-
pad to its own slot (1 to 8). Keypad assignment is required, as
it tells the panel which slots are occupied. The panel can then
generate a fault when a keypad supervisory is not present.
NOTE: One LCD keypad must be assigned to slot 8 in order to
upload keypad programming using DLS-1 software.
How to Assign Keypads
Do the following at each keypad installed on the system:
1. Enter [*][8][installer's code] to go to installer programming
2. Enter [000] for Keypad Programming
3. Enter [0] for Slot Assignment
4. Enter a two digit number (11-18) to specify which supervi-
sory slot the keypad will occupy.
)
DC

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