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Transmitter Power Supply
Out put: 20 - 28V DC (24V DC nomi nal).
Mini mum Load Im ped ance: 910Ω (22mA @ 20V DC).
ALARM CONTROL
Maxi mum Num ber of Alarms: Three
Max. No. of Out puts Avail able: All three out puts can be alarm out puts.
Com bi na to rial Alarms: Logi cal OR of alarms to an in di vid ual
hard ware out put is avail able.
COMMUNICATIONS
Type: Se rial asyn chro nous UART- to- UART
link.
Data For mat: AS CII: One start bit, even par ity, seven
data bits, one stop bit.
MOD BUS: as above with odd, even or
no par ity
Physi cal Layer: RS485
Pres en ta tion Layer: AS CII or MOD BUS
Maxi mum Num ber of Zones: 32
Baud Rate: Se lecta ble from 9600, 4800, 2400 or
1200 Baud.
Zone Ad dress Se lec tion: Se lecta ble from front panel in the range
1 - 32.
PERFORMANCE
Reference Conditions
Generally as BS5558.
Am bi ent Tem pera ture:
20
o
C ±2
o
C
Rela tive Hu mid ity: 60 - 70%
Sup ply Volt age:
90 - 264V AC 50Hz ±1%
Source Re sis tance: <10Ω for ther mo cou ple in put
Lead Re sis tance: <0.1Ω/lead bal anced (Pt100)
Performance Under Reference Conditions
Com mon Mode Re jec tion: >120dB at 50/60Hz giv ing neg li gi ble
ef fect at up to 264V 50/60Hz.
SM067-A November, 2000 A-5
59039
1
8
-DIN Digi tal In di ca tor Ap pen dix A
Prod uct Man ual - Vol ume II Prod uct Speci fi ca tion