Technical
Specifications
121 of 132
Publication S177E V2.0 Issue 03/05
16 TECHNICAL SPECIFICATIONS
16.1 Master Station
Enclosure
19” rack to DIN41494 with rear terminals and connectors
Supply
Voltage
90 to 264V ac, 43 to 440Hz, Fuse 1 Amp
Power
Consumption
30VA for each master station module, 60VA for a hot standby
master station
Current
Loop
20mA 15V max, Pakscan protocol
Cable
Single twisted pair, 500
Ω
max resistance and 3.9
µ
F max
capacitance
Field
Units
240 max Actuator and General Purpose field units
Host
Communications
(RS232 or RS485)
Connector
9 way D type
Protocol
Modbus
RTU
Format Asynchronous
Baud rate
1200, 2400, 4800, 9600, and 19200
Parity
Odd, Even, None or Always 0
Stop
Bits
1
Host Communications
(Ethernet option)
Connector
RJ45
Protocol
Modbus
TCP
Loop Connections
Screw clamp terminals suitable for 1.5
2
mm cables
Power Connection
IEC
connector
Environmental Spec
Operating Temperature -10 to 60
o
C
Storage Temperature -10 to +70
o
C
Humidity 5% to 95% RH non-condensing
Relay Contacts
300 mA at 24V dc or 130 mA at 125V ac
16.2 Actuator Field Units
For data on field units fitted inside Rotork actuators refer to the actuator or field unit data sheets. The
integral field units operate in the same environment as the actuator, using the actuator power supply
and communicating commands and data directly with the actuator electronics.