Edwards 3-IDC8/4 Assembly instructions
© 2014 UTC Fire & Security Americas Corporation, Inc. 1 / 4 P/N 270492-EN • REV 04 • ISS 10JUL14
3-IDC8/4 Traditional Zone I/O Module
Installation Sheet
Description
The 3-IDC8/4 Traditional Zone I/O Module provides eight
Class B traditional direct connect initiating device circuits
(IDCs) for compatible two-wire smoke detectors and dry
contact initiating devices. Four of the initiating device circuits
can be converted to Class B notification appliance circuits
(NACs). The four IDC/NAC circuits must be configured as
either an NAC or an IDC, never both.
Each IDC can be set for latching or nonlatching operation and
smoke verified or unverified operation using the software
definition utility.
Each pair of NAC circuits may be configured to provide
24 VDC from the internal chassis rail, 24 VDC from an external
power supply, or signals from an external source for
notification, audio, and telephone applications. NAC input
terminals are provided to supply the external signal source.
Installation
Install and wire the 3-IDC8/4 in accordance with applicable
national and local codes, ordinances, and regulations.
WARNING: Electrocution hazard. To avoid personal injury or
death from electrocution, remove all sources of power and
allow stored energy to discharge before installing or removing
equipment.
Caution: Equipment damage hazard. This product is sensitive
to electrostatic discharge (ESD). To avoid damage, follow
accepted ESD handling procedures
To install the 3-IDC8/4:
1. If circuits are configured as NACs, position jumpers at the
correct locations for an internal or external riser source.
See “Jumper settings” on page 2.
2. Install the module on the rail chassis, pressing the
mounting studs firmly into the mounting holes. See
Figure 1.
3. Connect field wiring. See “Wiring” on page 2.
Figure 1: Installing the 3-IDC8/4
(1) Mounting studs
IDC/NAC
IDC/NAC
+-+-
+-
+-
+-
+-
+-
+-
+-
+-
1
5
23
7
4
8
6
IDC/NAC
IDC/NAC
IDC
IDC
IDC
IDC
NACIN
NACIN
1/2
5/6
RXTX
TB1
TB2
JP1 JP2
JP3JP4
(1)
(1)
2 / 4 P/N 270492-EN • REV 04 • ISS 10JUL14
Jumper settings
For circuits configured as NACs, the NAC pairs share a
common power/signal source. Two jumpers on the module
select the signal source for each NAC pair. See Figure 2 for
jumper pin numbers.
Notes
•Jumper positions must be set in parallel. Set jumpers in
both JP1 and JP2 the same. Set jumpers in both JP3 and
JP4 the same.
•Jumpers have no effect when the IDC/NAC circuits are
configured as IDC circuits.
Table 1: Jumper settings for circuit power/signal source
Circuits
External [1]
Internal 24 VDC [2]
IDC/NAC1 and 2
JP1 to 1 and 2
JP2 to 1 and 2
JP1 to 2 and 3
JP2 to 2 and 3
IDC/NAC5 and 6
JP3 to 2 and 3
JP4 to 2 and 3
JP3 to 1 and 2
JP4 to 1 and 2
[1] Supplied via NAC IN terminals.
[2] See total current limit in “Specifications” on page 3.
Wiring
Connect field wiring as shown in Figure 2.
•Wiring is supervised and power-limited.
•Maintain 0.25 in. (6 mm) separation between power-
limited and nonpower-limited wiring at all times. Route the
power-limited wiring through the notches at the right front
of the chassis. Secure the wiring to the cabinet using
nylon cable ties.
•If shielded cable is used, it must be continuous, free from
earth ground, and must only be connected to the ground
terminal on the source of the riser.
•Dedicated initiating device circuits (Class B, Style B):
IDC3, IDC4, IDC7, IDC8.
•Circuits configurable as IDC or NAC (Class B, Style Y):
IDC/NAC1, IDC/NAC2, IDC/NAC5, IDC/NAC6.
•Synchronized operation of Genesis strobes requires a
separately installed synchronization device. See the
control panel or power supply compatibility list for
compatible synchronization devices.
•For a list of 3-IDC8/4 compatible devices, see the EST3
Compatibility List (P/N 3100427-EN) and EST3X
Compatibility List (P/N 3101801-EN).
Figure 2: Wiring the 3-IDC8/4
Legend
(1) IDC/NAC1 configured as an IDC circuit (use a UL/ULC Listed
4.7 kΩ EOLR)
(2) Jumper JP1 and JP2 (NAC1 and 2)
(3) Jumper JP3 and JP4 (NAC5 and 6)
(4) From external source
(5) IDC/NAC5 configured as an NAC circuit (use a UL/ULC Listed
15 kΩ EOLR)
Note: Signal polarity is shown in supervisory mode. For an NAC, the
polarity reverses when the circuit is active.
J1
IDC/NAC
1
IDC/NAC
2
IDC
3
IDC
4
NAC IN
1/2
IDC/NAC
5
IDC/NAC
6
IDC
7
IDC
8
NAC IN
5/6
TX RX
15 k
EOLR
Ω
4.7 kΩ
EOLR
+
−
+
−
(1)
(5)
(4)
(2)
(3)
JP4
JP2
JP3
JP1
TB2
TB1
1
1
1
1
2
2
2
2
3
3
3
3
P/N 270492-EN • REV 04 • ISS 10JUL14 3 / 4
Specifications
Quantity
8 circuits total:
4 dedicated IDCs
4 configurable as IDCs or NACs
Voltage
24 VDC
Current [1]
Standby
Alarm
48 mA at 24 VDC
408 mA at 24 VDC
Initiating device circuit
Wiring configuration
Voltage
Short circuit current
Circuit resistance
Capacitance
EOLR
Compatible detectors
Class B (Style B)
16.23 to 25.4 VDC max., ripple 400 mV
75.9 mA max.
50 Ω max.
100 µF max.
4.7 kΩ (UL/ULC Listed)
Refer to EST3 Compatibility List
(P/N 3100427-EN) and
EST3X Compatibility
List (P/N 3101801-EN)
Notification appliance circuit
Wiring configuration
Output voltage
Output current
Special application
Regulated
Power
EOLR
Class B (Style Y)
24 VDC nom., 70 VRMS max.
3.5 A at 24 VDC tot., each NAC
3.5 A at 24 VDC tot., NAC pair [2]
7.0 A at 24 VDC tot. for all NACs when the
chassis rail is used as the 24 VDC source
1 A at 24 VDC total for NAC pair (requires
5 A peak) [3]
3 V maximum line loss
60 W at 25 VRMS
100 W at 70 VRMS
15 kΩ (UL/ULC Listed)
Wire size
12 to 18 AWG (1.0 to 4.0 mm²)
Installation
One space on the rail chassis
Operating environment
Temperature
Relative humidity
32 to 120°F (0 to 49°C)
0 to 93% noncondensing
[1] Does not include a control
-display module on the NAC.
[2] When NAC pairs (NAC1 and 2 or NAC5 and 6) are configured for
an
internal 24 VDC source (see Table 1 on page 2).
[
3] One 3-PPS primary power supply can support one regulated NAC
pair, at 1 A total for EST3 systems only.
Regulatory information
North American
standards
UL 864, ULC-S527
C
PR certificates Refer to the European Marketplace Manual.
EN 54
EN 54-2, EN 54-4, EN 54-16
EU compliance
FCC compliance
This device complies with part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any
interference received, including interference that
may cause undesired operation.
Environmental
class
UL: Indoor dry
IEC: 3K5
2002/96/EC (WEEE directive): Products marked
with this symbol cannot be disposed of as
unsorted municipal waste in the
European Union.
For proper recycling, return this product to your
local supplier upon the purchase of equivalent
new equipment, or dispose of it at designated
collection points. For more information see:
www.recyclethis.info.
Contact information
For contact information, see www.edwardsutcfs.com.
4 / 4 P/N 270492-EN • REV 04 • ISS 10JUL14
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