DOC: GLT.MAN-125
ISSUE:
1
www.gltexports.com
DATE:
14/4/08
ALARM SYSTEMS
ADDRESSABLE INTERFACE UNITS
ZIU – ADDRESSABLE INPUT UNIT
Technical Data
OPERATING VOLTAGE
17 – 33V DC
QUIESCENT CURRENT
900uA
ALARM CURRENT
2.9mA
FAULT CURRENT
2.8mA
ISOLATING CURRENT
7.3mA
INPUT END OF LINE
47K
DEVICE NORMAL RESISTANCE (RETURN VALUE 16)
10K to 75K
DEVICE OPEN CCT FAULT RESISTANCE (RETURN VALUE 4)
85K to open circuit
DEVICE ALARM RESISTANCE (RETURN VALUE 64)
0K to 5K
OPERATING TEMPERATURE
0
o
C to 50
o
C
MAX HUMIDITY
95% RH Non Condensing
IP RATING
IP43
SIZE
127 x 88 x 59 mm
WEIGHT
220g
Short Circuit Isolator Specification
MAXIMUM LINE VOLTAGE
33V DC
MINIMUM LINE VOLTAGE (NON ISOLATING)
17V DC
MAXIMUM RATED CONTINUOUS CURRENT
1 Amp
MAXIMUM RATED SWITCHING CURRENT
3 Amp
MAXIMUM LEAKAGE CURRENT (ISOLATING)
0.7 mA
MAXIMUM SERIES IMPEDENCE
47K
ISOLATION VOLTAGE
15.6V +/- 0.5V
ISOLATION RESPONSE TIME
25 us to 300 us
RECONNECTION VOLTAGE
18.5V +/- 0.5V
RECONNECTION TIME
UP TO 2 SEC
Troubleshooting
DEVICE NOT SEEN BY PANEL
CHECK ADDRESS SETTING
CHECK WIRING TO DEVICE (FOR CONTINUITY & POLARITY)
CHECK FOR LOOP VOLTAGE AT & - TERMINALS
DEVICE REPORTS A FAULT (ANALOGUE VALUE 4)
CHECK WIRING FROM DEVICE TO MONITORED CONTACT
CHECK FOR CORRECT END OF LINE
DEVICE REPORTS AN ALARM (ANALOGUE VALUE 64)
CHECK IF MONITORED CONTACTS ARE OPERATING CORECTLY
CHECK FOR SHORT CIRCUIT ON WIRING
CHECK THAT A NORMALLY CLOSED CONTACT IS
NOT
USED
ANALOGUE VALUE UNSTABLE
CHECK FOR DOUBLE ADDRESS FAULTS
CHECK FOR LOOP DATA CORRUPTION WITH LOOP TEST TOOL
LOOP FAULT (ISOLATING) LED ON
CHECK FOR SHORT CIRCUIT ON LOOP
CHECK FOR WRONG POLARITY CONNECTION TO LOOP DEVICES
CHECK FOR TOO MANY DEVICES BETWEEN ISOLATORS
Protocol usage
The ZIU addressable interface unit has no panel controllable outputs.
All it`s indication LEDs are under its own control.
In the event of an alarm, it will set input bit 0 to an active condition, as well as setting it’s analogue value to 64 to indicate it’s activation.
Other information
Like all electronic equipment, at the end of it`s working life this unit should not be disposed of in a refuse bin.
It should be taken to a local reprocessing site as per the guidelines of the WEEE directive, for correct disposal.
