West 8600 1/8 DIN Plastics Controller

TECHNICAL DATA

Features
Control Types	Full PID with Pre-tune, Self-tune, Manual Tuning, or On-Off control. Heat only or heat & cool
Soft Start	Allows lower SP value and cycle time during the process start-up phase
Auto/Manual	Selectable from front panel, with bumpless transfer. Instant power-off feature also available as standard
Output Configuration	Up to 4 total. Max 2 for control (Heat & Cool), max 3 for Alarms, max 1 for retransmit Process value or Setpoint
Process Alarm Types	Process high, process low, SP deviation, band, logical OR
Heater Break Alarm Types	Current low or high, (in absolute amps or % of nominal current) plus contactor/thyristor short circuit
Human Interface	Human Interface 4 button operation, dual 4 digit 10mm & 8mm high LED displays, plus 3 LED indicators
PC Configuration	Off-line configuration from serial port to dedicated config socket (comms option not required)
Input
Thermocouple	J, K, R, S, T, B, L, & N.
RTD	3 Wire PT100, 50 Ohm per lead maximum (balanced)
Impedance	>100M Ohm
Accuracy	+/- 0.25% of input span +/- 1 LSD (T/C CJC better than 0.7°C)
Sampling	4 per second, 14 bit resolution approximately
Sensor Break Detection	< 2 secs, control O/P's turn off, high alarms activate for thermocouple ranges, low alarms activate for RTD
Heater Current	0-50mA secondary from external current transformer. Display is scaleable up to 100 amps
Output and Options
Control & Alarm Relays	Contacts *SPDT 2Amp resistive at 240V AC,>500,000 operations.*Dual relay=SPST for O/P's 2 & 4
Control SSR Driver Outputs	Drive capability, output 1= >10V DC into 500 Ohm min, output 2= >4.3V DC into 250 Ohm min
Solid State (Triac) Outputs	0.01 to 1 Amp AC 20 to 280V, 47 to 63Hz
Retransmit Outputs	0-20/4-20mA into 500 Ohm max, 0-10/0-5V into 500 Ohm min. Accuracy typically +/- 0.25%
Communications	2 Wire RS485, 1200 to 9600 Baud, Modbus or West ASCII (Selectable)
Dual SP/Current Transfer	Volt free or TTL input. Selects between 2 setpoints or quick transfer of heater current as nominal value
Operating and Environmental
Temperature & RH	0 to 55°C (-20 to 80°C storage), 20% to 95%RH non-condensing
Power Supply	100 to 240V 50/60Hz 7.5VA (optional 20 to 50V AC 7.5VA/22 to 65V DC 4W)
Front Panel Protection	IEC IP66 (Behind panel protection is IP20)
Approvals and Certification	CE, UL & ULc

DIMENSIONS

CONNECTION DETAILS

FIELD RECONFIGURATION

Input
Configurable Thermocouple or RTD, no extra parts required

Output 1
Type is fixed as Relay/SSR (selectable)

Output 2 (and 4)
Configurable as Cool O/P or Alarm via plugin Relay, SSR, Triac or DC Linear modules. A Dual Relay card is available which allows Cool O/P or Alarm on output 2 plus Heater Break Alarm on output 4

Output 3
Configurable as Alarm via plug-in Relay module, or retransmit using DC Linear module

Option Slot
Configurable as RS485 comms or dual setpoint selection/current transfer, via plugin modules

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