MZX Fire detection system
DDM800 – Universal fire and gas detector module
DDM800 – Universal fire and gas detector module
Part No. 577.800.006 (PCB)
Installation information
DDM800 PROGRAMMING PORT FOR 801AP SERVICE TOOL
Fig. 1: DDM800 – Universal fire and gas detector module
Description
The DDM800 provides the ability to connect and interface
2 zones of 20 V DC 2-wire conventional fire detectors, or two
4-20 mA signalling sensors, to the MX fire alarm controller.
The DDM800 monitors the status of the detectors and the wiring to the detectors and signals detector and wiring status back
to the controller.
The conventional detector circuits can be configured in one of
two ways:

To monitor 1 or 2 Class B spur circuits

To monitor a single Class A loop circuit
The DDM800 supports the BS 5839 detector removal option.
The 4-20 mA signalling sensors may be one of two types:

Current sinking

Current sourcing
Technical specification

Type Identification Value: 149
4-20 mA signalling sensors:

System Compatibility: Use only with MX Fire Alarm Controllers
– No EOL for current sinking sensor

Environment: Indoor Application only

Operating Temperature: -25 to +70 oC
Sense Resistor: Value 220 Ohms, 1 % 0.25 W

Storage Temperature: -40 to +80 oC
– Internal to DDM800 for current sinking sensors

Operating Humidity: Up to 95 % RH non-condensing
– Fit to terminals for current sourcing sensors

Dimensions (WxHxD)
Insertion Voltage:
PCB: 84x60x25 mm (includes LED on rear)
– 5 V max. (Compliance Voltage)

Cable Termination: One cable up to 2.5 mm2
– 4.4 V/20 mA

Detector Circuits (x 2)
– 220 Ohms, 1 % for current sourcing sensor

Relative to 0 V when DDM800 sinking (i.e., for current
sourcing sensor). Relative to DDM800 22 V supply when
sourcing (i.e., for current sinking sensor).
– Detector Circuit Supply Voltage: 22 V nominal (22.5 V
max.)
– Detector Supply Voltage Low: 21 V, 14.5 V for Series
600 detectors in Loop Power mode


MX Loop Voltage
Max. Loop Voltage: 40 V DC
Detector Circuit Current Limit:
Min. Loop Voltage:
– 25 mA (22 min., 27 max.)
– 28 V DC (all loop power modes except for only Series
600 detectors)
– 52 mA max. when configured for Evac type call points
Detector Current per Circuit: 2.5 mA max.
– 21 V DC (external power or on Series 600 detectors on
loop power)
Detector Circuit Resistance: 50 Ohms max.

4-20 mA Current Sensing
EOLs (End of Line Devices)

External 24 V PSU Voltage: 21.9 V to 29 V
Conventional Circuit: 4,7 kOhms, 1 % standard

Battery Requirements – External Power Mode
Detector Removal (BS 5839): 18 V, 2 % Zener diode
Installation information Doc. version 2.0
From Addressable Loop
1
DDM800 – Universal fire and gas detector module
– Standby Current: 2.2 mA per DDM800 (1.1 mA per cct
for Class B)
MZX Fire detection system

Battery Requirements – Loop Power Mode
From Addressable Loop: 4.6 mA No load (both ccts open)
– Alarm Current: 7.7 mA per DDM800 (Alarm LED on)
From 24 V PSU
– Class B Standby Current: 20 mA per DDM800 + det load
x 1.82/10 mA per cct + det load x 1.82
– Class B Standby Current, 4,7 kOhms EOL: 10 mA per
DDM800/5 mA per cct (excludes detector load)
– Class B Alarm Current: 100 mA per DDM800 (2 ccts in
alarm, Alarm LED on)
– Class A Standby Current 4,7 kOhms EOL: 5 mA per
DDM800, one cct only (excludes detector load)
– Class B S/C Fault Current: 95 mA per DDM800/48 mA
per cct
– Class B Standby Current, 18 V EOL: 18 mA per
DDM800/9 mA per cct (includes detector load)

Electromagnetic Compatibility
The DDM800 complies with the following:
– Class B Alarm Current: 52 mA per DDM800/26 mA per
cct (or per DDM800 for Class A)
– Product family standard EN 50130-4 for immunity
– EN 61000-6-3 for emissions
Address setting
The DDM800 has a default factory set address of 255, that
must be set to the loop address for the device. The DDM800
may be programmed prior to installation by using the 801AP
MX Service Tool and the internal programming port (see Fig. 1).
A single DDM800 can be programmed after installation with
the “Change Address” command in the MX controller or MX
Loop Tester.
The DDM800 allocates up to 4 consecutive addresses on the
MX addressable loop, dependant on configuration, starting
from the chosen programmed address number.
Wiring and installation
How to connect the DDM800
1
If the DDM800 is to be loop powered, then move the
header links on J2, J3 and J4 to pins 1 and 2.
2
All conductors to be free of earths.
3
All wiring must conform to current edition of IEE Wiring
Regulations and BS 5839 Part 1.
4
See Figs. 8 to 14 for simplified DDM800 wiring diagrams.
5
For Class A wiring (see Fig. 10), detector circuit A is used,
the return is to circuit B which is fitted with the EOL.
6
For 4-20 mA gas sensors, connection of the loop and 24 V
wiring is shown in Figs. 13 and 14.
Maximum one sensor may be fitted to each circuit, both
sensors must be of the same type (sinking or sourcing).
7
When using current sourcing 4-20 mA sensors, the
220 Ohms 1 % 0.25 W current sensing resistor must be fitted to the DDM800 terminals as shown in Fig. 14.
For this reason (220 Ohms) the FV300 cannot source a
DDM800 and so must be configured as a current sinking
device with the DDM800 sourcing as per Fig 13.
8
Verify the correct polarity of all wiring before connecting the
DDM800 to the addressable loop wiring, 24 V supply and
detector circuits.
9
When using the Exd housing, all wiring must be in MICC or
equivalent.
10 Conventional detector circuit resistance must not exceed
50 Ohms for BS 5839 (otherwise 100 Ohms)
Mounting
2
Assemble the chassis plate into the housing and secure
using fixing screw, as Fig. 3.
3
Connect the chassis plate earth lead to the housing, as Fig.
3.
Pre-mounted options
For pre-mounted options follow the ordering information (see
section “Ordering information” on page 4).
Note that fitting the PCB to the D800 box and Exd housing each
require a specialised mounting plate that is not available apart
from ordering the appropriate Finished Goods Part Number
(see section “Ordering information” on page 4).
Installation of DDM800 into an ANC8 ancillary
housing
The ANC8 housing can accommodate up to eight ancillary
PCBs. A stacking kit is available if a second layer of PCBs is
required.
NYLON NUT
PLAIN WASHER
DDM800 PCB
NYLON SPACER
PLATE
HOUSING
Fig. 2: ANC8 - PCB fixing detail
How to install DDM800 modules into an ANC8
ancillary housing
1
2
Assemble the required DDM800 PCBs onto the chassis
plate as required, fixing as shown in Fig. 2.
Installation information Doc. version 2.0
MZX Fire detection system
TYPICAL POSITIONS OF 800
MODULES (4 PER ROW)
L-
R+
L- COM +24V COM +24V A+
A-
B+
CHASIS PLATE
L+
CHASIS PLATE
FIXING SCREW
DDM800 – Universal fire and gas detector module
B-
4 FIXING HOLES
MOUNTING PLATE
TRANSIT SCREW
CHASIS PLATE EARTH
COVER EARTH
Fig. 3: ANC8 - Chassis plate
Mounting the DDM800 to an M520 ancillary
cover
How to mount the DDM800 module to an M520
cover
1
Assemble the DDM800 to the M520 Double Gang cover,
using the four screws and washers provided.
2
Fit the DDM800 and terminal identification labels to the protective cover (see Fig. 4).
3
Fit the protective cover.
Fig. 5: DDM800 in the D800 housing
DIN rail mounting
Use DIN rail mounting bracket.
How to mount the DDM800 to a DIN rail
1
Mount the 35 mm “top-hat” DIN rail into a suitable electrical enclosure.
2
Fit the PCB to the stand-offs on the DIN rail mounting
bracket (see Fig. 6).
3
Clip the mounting bracket onto the DIN rail.
Fig. 6: DDM800 on DIN rail mounting bracket
DDM800 LABEL
TERMINAL IDENTIFICATION LABEL
Mounting the Exd housing
Fig. 4: DDM800 - Label positioning
Refer to the installation instructions supplied with the housing.
Mounting the DDM800 into an D800 IP55
ancillary housing
Sealing the LED
How to mount the DDM800 into an D800 ancillary
housing
1
Slide the four white stand-offs from the downside into the
fixing holes of the mounting plate.
2
Mount the mounting plate into the housing and tighten the
four fixing screws (see Fig. 5).
3
Fit the PCB to the stand-offs, push until the PCB firmly
locks.
4
Install the cables through the appropriate cable inlets.
5
Fix the cover with the four screws.
If an IP22 rating is required, additional sealing must be applied.
Apply Loctite S1595 silicone sealant around the LED, as shown
in Figure 7. Note how the sealant fills the small gap between
the LED and its hole in the cover. Avoid smearing sealant over
the LED surface. Using a fine nozzle is recommended.
COVER
LED
SEALANT
Fig. 7: Sealed LED
Installation information Doc. version 2.0
3
DDM800 – Universal fire and gas detector module
MZX Fire detection system
Simplified DDM800 wiring diagrams
FROM
DDM800
4,7 kOhm
560 Ohm
EOL
EOL
FROM +
24 V PSU - 24 V DC
+ TO NEXT
Fig. 12: Connection of an “Alarm” Clean Contact N.O.
24 V DC - DDM800
FROM + MX LOOP
PREVIOUS DEVICE
MX LOOP
L+
L-
R+
R- COM +24V COM +24V A+
1
A-
B+
+ TO NEXT
- DEVICE
FROM
PSU
+
+
-
-
SUPPLY
SIGNAL
B-
4-20 mA
CURRENT
SINKING
SENSOR
J2
LOOP EXT
1
J3
Prog. Por t
PWR SEL
J4
1
A+
D1 D6
A-
B+ B-
RED
YELLOW
LOOP EXT
Fig. 13: Connection of a 4-20 mA current sinking sensor (only
one circuit shown for clarity)
Fig. 8: Spur circuits with external 24 V
EOL
EOL
FROM
PSU
+
SUPPLY
-
+
-
4-20 mA
CURRENT
SOURCING
SENSOR
SIGNAL
FROM
+
PREVIOUS - MX LOOP
DEVICE
+ TO NEXT
MX LOOP - DEVICE
220 Ohm 1 %
L+
L-
R+
R- COM +24V COM +24V A+
1
A-
B+
B-
J2
LOOP EXT
J3
PWR SEL
J4
1
A+
LOOP EXT
A-
B+ B-
D1 D6
RED
YELLOW
Prog. Por t
1
Fig. 14: Connection of a 4-20 mA current sourcing sensor (only
one circuit shown for clarity)
Fig. 9: Spur circuits loop powered
FROM
24 V PSU
FROM
PREVIOUS
DEVICE
TO NEXT
24 V DC DDM800
24 V DC
TO NEXT
MX LOOP DEVICE
MX LOOP
EOL
Fig. 10: Loop circuits (Class A wiring) with external 24 V
FROM
DDM800
CATODE
(BAR)
5BD L11
DIODE BASE
L2
2
L
18 V
ZENER DIODE
Fig. 11: Diode base and Zener EOL connection
4
Installation information Doc. version 2.0
MZX Fire detection system
DDM800 – Universal fire and gas detector module
CPR Information
0832
Tyco Fire & Security GmbH
Victor von Bruns-Strasse 21
8212 Neuhausen am Rheinfall
Switzerland
15
DoP-2015-4034
EN 54-17:2005 and EN 54-18:2005
Short-circuit isolator and input-output device for use
in fire detection and alarm systems
DDM800
Essential Characteristics
EN54-18:2005
Response delay (response time): Pass
EN54-17:2005 and EN54-18:2005
Performance under fire conditions: Pass
Operational reliability: Pass
Durability of operational reliability temperature
resistance: Pass
Durability of operational reliability; vibration resistance: Pass
Durability of operational reliability; humidity resistance: Pass
Durability of operational reliability; corrosion resistance: Pass
Durability of operational reliability; electrical stability: Pass
Installation Instructions 120.415.963_MZX-DDDM-F
Service Instructions MZX-P-S
Installation information Doc. version 2.0
5
DDM800 – Universal fire and gas detector module
MZX Fire detection system
Ordering information
 DDM800 – Universal fire and gas
577.800.006
detector module (PCB)
 DDM800 – Universal fire and gas
577.800.036
detector module c/w M520 cover
 DDM800 – Universal fire and gas
577.800.056
detector module IP55 D800 housing
 DDM800 – Universal fire and gas
577.800.066
detector module c/w Exd housing
 DDM800 Zener diode EOL (Pack of
557.800.057
10)
547.004.002
 M520 ancillary cover
517.035.007
 ANC8 ancillary housing
557.180.096.A/T/Y
120.415.963_MZX-D-DDM800-F Doc. version 2.0 Sheet 1
6. May 16 – Subject to change without notice.
 DIN rail mounting bracket
© Tyco Fire & Security GmbH, Victor von Bruns-Strasse 21, 8212 Neuhausen am Rheinfall, Switzerland
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