Transmitter Power Supply
Out put:
20 - 28V DC (24V DC nomi nal).
Mini mum Load Im ped ance:
910
Ω
(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:
<10
Ω
for ther mo cou ple in put
Lead Re sis tance:
<0.1
Ω
/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
