1
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4
-DIN,
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-DIN &
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16
- DIN Controllers & Indicators - Product Manual
59305, Issue 5 – March 2005 Specifications Page 135
Process Alarms
Maximum Number of Alarms
(Controllers):
Two “soft” process alarms (high, low, deviation or band) plus
Loop Alarm.
Maximum Number of Alarms
(Indicators):
Five “soft” alarms (process high or low)
Combinatorial Alarms:
Logical OR or AND of alarms to any suitable output.
Digital Communications
Type:
Asynchronous Serial.
Protocols:
ASCII and Modbus RTU.
Physical Layer:
RS485.
Zone address range:
1 to 99 (ASCII), 1 to 255 (Modbus).
Bit rate:
1200, 2400, 4800, 9600 and 19200 bps.
Bits per character:
ASCII: 10
Modbus: 10 or 11 (depending on parity setting)
Stop bits:
1
Parity:
ASCII: Even (fixed).
Modbus: None, even or odd (selectable).
Isolation:
Reinforced safety isolation from inputs and outputs.
Reference Conditions
Ambient Temperature:
20°C ±2°C.
Relative Humidity:
60 to 70%.
Supply Voltage:
100 to 240V AC 50Hz ±1%.
Source Resistance:
<10Ω for thermocouple input.
Lead Resistance:
<0.1Ω/lead balanced (Pt100).
Operating Conditions
Ambient Temperature (operating):
0°C to 55°C.
Ambient Temperature (storage):
-20°C to 80°C.
Relative Humidity:
20% to 95% non-condensing.
Altitude:
Up to 2000m above sea level.
Supply Voltage:
Either 100 to 240V ±10% AC 50/60Hz
or 20 to 48V AC 50/60Hz & 22 to 55V DC
Power Consumption:
5W / 7.5 VA maximum.
Source Resistance:
1000Ω maximum (thermocouple).
PT100 Input Lead Resistance:
50Ω per lead maximum, balanced
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