Process Alarms; Digital Communications; Reference Conditions; Operating Conditions - WEST P8700 User Manual

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/ -DIN, / -DIN & /
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Process Alarms

Maximum Number of Alarms
(Controllers):
Maximum Number of Alarms
(Indicators):
Combinatorial Alarms:

Digital Communications

Type:
Protocols:
Physical Layer:
Zone address range:
Bit rate:
Bits per character:
Stop bits:
Parity:
Isolation:

Reference Conditions

Ambient Temperature:
Relative Humidity:
Supply Voltage:
Source Resistance:
Lead Resistance:

Operating Conditions

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