Eurotherm PC300 Guide

HA 026773 Page 1 of 4
Issue 1.3 June 2000
Installation Manual and
User guide
PC300 Process control system
The PC300 process control system uses highly reliable and field tested PC3000 components. The unit
includes an integral power supply, the Local Controller Module ’plus’and two free module positions for
installing other I/O modules. The PC300 has a steel case construction and is designed for backplane
mounting.
Specification
General
Supply voltage range 85 to 132V ac rms
176 to 240V ac rms
Selected by external wiring option
Supply frequency range 48 - 62 Hz
VA requirements < 40VA for fully loaded rack
Power Supply Output 50W total, 24V @ 1.6A, 5V @ 2.5A
Inrush Current 25A, single cycle, cold start, high
line
Power supply hold up
time >20ms at minimum line voltage and maximum load (>100ms typical)
Input protection RFI Input filter, transient protection
Replaceable Fuse Rating 1.6A time lag
Mechanical
Height 193 mm, inc. mounting brackets
Depth 203 mm, inc. mounting brackets
Width 316 mm
Mounting Bulkhead mounting
Casing Robust Metal case to IP20
Module capacity 2 single with I/O slots
Ventilation Space 25mm free space above and below
Environmental
Operating Temperature 0 to 50o C
Storage Temperature -20 to 70o C
Relative Humidity 5 to 95 % non-condensing
Weight 5.25 Kg
Weight support brackets 0.4 Kg each
EMC
Emissions EN50081-2: 1994
Immunity EN50082-2: 1992
Safety EN61010-1: 1993/A2: 1995
Installation cat II, Pollution degree 2
LCM-Plus
RAM 256K base RAM
Slot 1 512K standard
Slot 2 128k for special FB (optional)
Communications Ports
Ports A & B User ports
Port C PC3000 extension rack port
Standard Ports A & B RS422
Port C RS485 / RS422 (jumper selectable)
Baud Rates Ports A & B 300 to 38.4k
Port C 300 to 115k
Protocols Software selectable
(2 of ports A,B,C)
Available I/O modules
Analogue Input 0-100mV
0-10V
0-20mA
Thermocouple (J,K,R,S,B,Pyro)
PT100 Resistance Thermometer
Frequency 0-10kHz
Zirconia probe
Analogue Output 0-5V, 0-10V, -10 to +10V etc
4-20mA, 0-20mA etc
Digital Inputs 5Vdc
25Vdc
24Vac
85-264Vac
Volt Free
Digital Out Logic
Relay (N/O)
Pulse Input 200kHz - 5v, 12v(selectable)

PC300 User Guide
HA 026773 Page 2 of 4
Issue 1.3 June 2000
Installation
Dimensional Details (mm)
Location
The Power Supply Unit resides in the first ’slot’in every rack. The second ’slot’contains the Local
Control Module.
I/O module addresses
Configuration is made simple - there is no requirement to configure jumpers or switches to set I/O module
addresses. The module address is read directly from the backplane.
Compatability
The PC300 is directly compatible with and a subset of the PC3000. The two products share I/0 cards,
programming tools.and instruction manuals.
Manuals
PC3000 instruction manuals are used for the PC300.
219
316 4453
30
42
120
193
166
44
16
182 Alternate Bracket Position
94
203
Earth Connection
M8
338
Allow 15mm clearance
above bracket for fitting
Note:
5 THK.

PC300 User Guide
HA 026773 Page 3 of 4
Issue 1.3 June 2000
User Wiring
Slot 1
Supply Voltage
Configuration of the supply voltage is selected by an
external wiring option. A link is necessary between
terminals 10 and 11 for 85 to 132 V ac operation.
Health Relay
The health relay is energised during normal operation, and
is de-energised if the system watchdog fails. Watchdog
failure can be caused by the applications program failing
to run correctly of a system hardware failure.
Slot 2
Commissioning is simplified by the provision of status indicators fitted to the front of the module.
Indication of system status (run and fault), I/O processor status (run and fault), system diagnostic
functions and communication channel activity are provided.
System and IOC status LED’s
F = Fault
R = Run
Diagnostic LED’s
Consult ’PC3000 Hardware Reference Manual’for details
Communication LED’s
A, B, C. Serial channel communication activity
D Extension rack communication activity
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nc
nc
C Common
N/O Normally Open Health
N/C Normally Closed Relay
nc
nc
Lk Link for
Lk 85 - 132v operation
nc
L Live
N Neutral
Earth
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Label Function Terminal
Status Indication 24V 5V
System [Health Relay]
AuxilarySupply
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S ystem
Status IOC
Status
FR
Status Indication
Diagnostic s
Communications
R
F
124 3
AB D
C
Connections to serial ports
A
Extension Rack Only
C
B8 4
7 3
6 2
5 1
Pin
1: Rx
2: Tx
3: Tx-
4: Tx+
5: Rx-
6: Rx+
7: 0V
8: 0V
232
422

PC300 User Guide
HA 026773 Page 4 of 4
Issue 1.3 June 2000
Safety Notes Warning!
The mains (supply) voltage must be isolated before the mains (supply) connector is handled.
Warning!
Any interruption of the protective conductor inside or outside the apparatus or disconnection of
the protective earth terminal is likely to make the apparatus dangerous under some fault
conditions. Intentional interruption is prohibited.
Note: In order to comply with the requirements of safety standard EN61010, the power supply
module must have one of the following as a disconnection device, fitted within easy reach of the
operator and labelled as a disconnection device.
i. A switch or circuit breaker which complies with the requirements of IEC947-1 and IEC947-3
ii. A separable coupler which can be disconnected without the use of a tool
iii. A separable plug, without a locking device, to mate with a socket outlet in the building.
1. Before any other connection is made, the protective earth terminal shall be connected to a protective
conductor.
2. The Mains (supply voltage) wiring must be terminated in such a way that the Earth wire would be
the last wire to become disconnected should excess tension be applied to the mains cable.
3. It is recommended that crimps be used to terminate the wires before they are inserted into the
terminal blocks.
4. The Mains supply fuse within the Power supply unit is replaceable and should only be replaced with
a fuse of the same type and rating. In no conditions should the fuse be replaced with one of a higher
rating.
5. Whenever it is likely that protection has been impaired, the unit shall be made inoperative and
secured against unintended operation. The nearest manufacturers service centre should be consulted
for advice.
6. Any adjustment, maintenance or repair of the opened apparatus under voltage, is prohibited.
7. The unit is designed for use only in an enclosure.
8. Where conductive pollution (e.g. condensation, carbon dust) is likely, adequate air conditioning /
filtering / sealing etc. must be installed in the enclosure.
9. If the equipment is used in a manner not specified by the manufacturer, the protection provided by
the equipment might be impaired.
Symbols used on the unit labelling
One or more of the symbols may appear on the apparatus.
!Refer to User Guide for instructions
Protective Earth
LConnect the ’line’( switched) wire here
NConnect the neutral wire here
Eurotherm Ltd.
Faraday Close, Durrington, Worthing, West Sussex,
BN13 3PL, UK. Tel [phone]