Alarmtech IU 400 User manual

Detectors Analyzer
© 2018 Alarmtech –www.alarmtech.se Rev. IU400 1807en
Datasheet and Mounting Instruction IU 400
DESCRIPTION
IU 400 is an interface/analyzer for glass break detector GD 475.
It has three relays one for Intrusion, one for Fault and one for Tamper.
Max 15 units of GD 475 detectors can be connected to one IU 400 unit.
IU 400 together with GD 475 is certified according to EN 50131-1 and
EN 50131-2-7-2:2013 Grade 3, Class II.
FUNCTION
The IU 400 measures the current in a balanced alarm loop without end
of line resistance, simplifying the installation. No need to keep track of
the end of the loop. The detectors make up a balance under the control
of the IU 400 processor. An end of line resistor of 2.2kohm is only
required if the number of detectors is 3 or less. Changing the current in
the loop of +/- 0.8 mA for at least 200 ms. opens the IU 400 alarm relay
for 2-3 seconds in (AUT mode) or stays open (Latch mode) until reset
depending on how it is programmed.
The loop in IU 400 operates in the current range of 3 mA to 30 mA
corresponding to about 260 ohms to about 2600 ohms. Outside this area
the LED will flash, and alarm- and fault relays are open and the device
cannot be reset or programmed.
Reset can be done in three ways:
With the pushbutton on the device
Power supply interruption remote controlled by the control panel
Change from DAY to NIGHT connection on terminal no 5 or no. 15
DAY and NIGHT control of the detectors is done by changing the voltage
on the loop and determined by terminal 5 or 15. At DAY, the loop has 8V
and at NIGHT 6V regardless of supply voltage to IU 400 (8-30V DC).
IU 400 has two tamper switches, one for opening the cover and one for
breaking the IU 400 from the attachment.
To ensure the detector function, it monitors the voltage on the loop and
signals FAULT if the voltage exceeds or falls below the programmed
voltage.
CONNECTING THE DETECTORS
The detector GD 475 is polarity independent with a 2 core cable.
Picture below shows how the detectors are connected to the balanced
loop. At 3 or less detectors, a 2.2 ohm resistor must be connected, with
more detectors it is not necessary.
SCREW TERMINAL DESCRIPTION
1. 0 VDC
2. 10-30 VDC
3. (-) loop
4. (+) loop
5. DAY/NIGHT/Reset. DAY=0V or open
6. Intrusion relay NC
7. Intrusion relay NC
8. Spare
9. Fault relay NC
10. Fault relay NC
11. Spare
12. Tamper relay NC
13. Tamper relay NC
14. Spare
15. DAY/NIGHT/Reset. DAY=Vin or open
PROGRAMMING LOOP CURRENT
Programming quiescent loop current for IU 400 is done in two steps
after connecting power and the number of detectors needed.
1. First set the quiscent current
2. Second set the relay mode
The IU 400 has only one jumper for programming the normal loop
current in quiescent state and the Relay mode. The quiescent current
depends on how many GD 475 there are on the loop and the end of line
resistor used. Recommended is 2,2 kohm (only necessary at 3 or less
detectors).
Changing the Jumper S1 from Open-Close-Open is telling the processor
to sense and remember the current draw. After that you can program IU
400 relays to either Momentary mode with jumper inserted or latching
mode with jumper removed. At power down the unit remembers the
recent settings and no reprogramming is needed of loop current at
power up.
S1
Open
Closed
Open
Programming quiescent current on the loop by
changing S1 from Open to Closed to Open in a short
while.
S1
Open
S1 open is LATCH mode. The relays stay open at alarm
and LED is lit until manual or remote reset.
S1
Closed
If S1 remains closed, the alarm relay will open for 2-3
seconds and then close (AUTO mode). However, LED is
lit until manual or remote reset.
Notice: The small red Micro-match contact is for production
programming and reading the built-in log using Alarmtech IU-Link
software.
INSTALLATION
1. The IU 400 is placed within the protected area where the detectors
are mounted so that the authorized person will go there and reset
the device while inspecting the area.
2. Connect all detectors to the loop and terminate it with a resistance
of 2.2 kohm (at 3 or less GD 475).
3. Connect as shown in the figure.
4. After connecting power to IU 400, wait 30 seconds, then change
the jumper S1 briefly to Open-> Closed-> Open.
5. Select if the alarm relay is to be reset automatically (S1 = Closed) or
remain open at alarm (S1 = Open).
6. Trigger the alarm of each detector individually to ensure that they
all work correctly. Use the GVT 5000 tester.

© 2018 Alarmtech –www.alarmtech.se Rev. IU400 1807en
IU 400 RELAY FUNCTION AND LED INDICATIONS
Event
LED
Intrusion relay
Fault relay
Tamper relay
Normal state, Vin = 10-30V
Off
closed
closed
closed
Intrusion in DAY mode
Lit
open
closed
closed
Intrusion in NIGHT mode
Off
open
closed
closed
Low voltage on loop in DAY <7,5V
Low voltage on loop in NIGHT <5,5V
Blinking
closed
open
closed
Sabotage of loop in DAY mode
Blinking
open
open
closed
Sabotage of loop in NIGHT mode
Off
open
open
closed
IU self-test fail in DAY mode
Blinking
closed
open
closed
IU self-test fail in NIGHT mode
Off
closed
open
closed
GD self-test fail in DAY mode
Blinking
closed
open
closed
GD self-test fail in NIGHT mode
Off
closed
open
closed
TECHNICAL DATA IU 400
Supply voltage
10–30 VDC
Max. voltage ripple
1 Vpp at 12 V
Stabilizing time
10 sec
Loop quiescent operating area
2600ohm/ 3mA to 260 ohm/30mA
Low loop voltage FAULT indication
< 7,5V at DAY, < 5,5V at NIGHT
Current in quiescent state at 12V DC supply and 2,2k EOLR
Typ. 28,6mA+nx1,5mA (n=number of detectors)
Current in ALARM state at 12V DC supply and 2,2k EOLR
Typ. 24,5 mA+nx3,0mA (n=number of detectors)
Alarm output relay
Relay, 23 ohm in series, max 100mA
Loop Voltage in Day
Loop Voltage in Night
Typ. 8,0 VDC
Typ. 6,0 VDC
Fault output relay
Relay, 23 ohm in series, max 100mA
Tamper output relay
Relay, 23 ohm in series, max 100mA
Alarm loop
2,2 kΩ, 1% EOL resistance
threshold
>+/- 0,8mA
response time
>200 ms
reset time
>200 ms
Environmental
Class II (EN50130-5:2011)
Operating temperature
-10°C to +55°C
Operating humidity
max. 93% RH
Housing material
ABS plastic(white)
Dimensions:
91x31x23 mm
Certified
Security grade
EN 50131-1 and EN 50131-2-7-2:2012+A1:2013
EN Grade 3
Approvals
EN, SBSC
SOME TYPICAL MODES OF OPERATION FOR IU 400 CONNECTED TO A NUMBER OF GD 475
1.Normal operation in DAY mode, alarm relay programmed to LATCH:
GD alarming => IU Alarm relay opens and remains open. LEDs on IU and
GD are lit until reset.
Reset of IU and GD can be done in three ways, with button on IU,
switching from DAY to NIGHT or power down of IU.
2.Normal operation in NIGHT mode, alarm relay programmed to LATCH:
GD alarming => IU Alarm relay open and remains open. LEDs on IU and
GD are off.
Reset cannot be done until IU is set to DAY.
When set to DAY, IU and GD LEDs are lit.
Reset of IU and GD can be done in three ways during DAY:
1. with button on IU or
2. Switching from DAY to NIGHT or
3. Power down of IU
3.Normal operation in DAY mode, alarm relay programmed to AUTO:
GD alarming => IU Alarm relay opens for 3 seconds. LEDs on IU and
alarming GD are lit steadily.
Automatic reset is executed only on Alarm relay
Additional alarm will again cause Alarm relay to open for 3 sec.
Reset of IU and GD can be done in three ways, with button on IU, from
DAY to NIGHT or IU power down
Notice: Automatic reset is only valid for Alarm relay
4.Normal operation in NIGHT mode, alarm relay programmed to AUTO:
GD alarming => Alarm relay on IU open for 3 seconds. LEDs on GD and IU
remain off.
Automatic reset is executed only on Alarm relay
Additional alarm will again cause Alarm relay to open for 3 sec.
Reset of units cannot be done in NIGHT mode.
When switching to DAY mode, the LEDs on IU and alarming GD are lit.
5.Fault on IU in DAY mode and alarm relay programmed to LATCH:
At fault on loop both Alarm and Fault relay open and remain open and
LED on IU blinking if:
Loop current <3mA or > 30mA
Loop voltage <7,5V in DAY or <5,5V in NIGHT
Reset of IU can only be done with IU button or power down when fault is
repaired.
At Fault the reset by function DAY => NIGHT is inactivated. To reset by
this function the fault first must be repaired and unit reset by IU button.
6. Fault on IU in Night mode and alarm relay programmed to LATCH:
Alarm and Fault relay open and remain open.
No LED indication on IU.
Reset of IU can only be done in DAY MODE with IU button or power down
when fault is repaired.
Change to DAY mode will cause LED on IU to start blinking.
7. Fault on IU in DAY mode and alarm relay programmed to AUTO:
Alarm and Fault relay open and remains open.
Reset of IU can only be done with IU button or power down when fault is
repaired.
At Fault the reset by function DAY => NIGHT is inactivated. To reset by
this function the fault first must be repaired and unit reset by IU button.
8. Fault on IU or GD in NIGHT mode and relay programmed to AUTO:
Alarm and Fault relay open and remain open.
No LED indication on IU.
Reset of IU can only be done in DAY with IU button or power down only
when fault is repaired.
At fault the reset by function DAY => NIGHT is inactivated. To reset by this
function the fault first must be repaired and unit reset by IU button.
Change to DAY mode will cause LED on IU to start blinking.
9. Programming of loop current:
Programming of normal loop current is made when all detectors are
installed correctly and there is no Fault indication (wait 30 seconds after
power-up).
Change the jumper S1 briefly to Open-> Closed-> Open (approx. 0,5sec)
Now programming modes can be done. Select AUTO mode (S1 = closed)
or LATCH mode (S1 = open).