ISS Online Catalogue    West Instruments    West Instruments Plastics Controllers    Option Modules

	Relay Module A maximum of two additional relays may be fitted to a controller, provided no re-transmission or transducer power supply is required. They can function as alarms or one can be a second control output (for Heat/Cool applications) Rating is 2A 240Vac non inductive  Price:  £20.00   (Excluding: VAT at 17.5%)
Triac Module The Triac module (0.01 to 1 A max) can be used in place of the relay module if required.  Price:  £20.00   (Excluding: VAT at 17.5%)
	Dual Relay Module This is a special module specific to the Plastics controllers, to enable a heater break alarm relay output (Output 4) as well as the standard outputs 1, 2 and 3. It ONLY fits in output 2 slot.  Price:  £29.00   (Excluding: VAT at 17.5%)
Analogue Retransmission (Recorder Output) Module An analogue retransmission module that can be configured for 0/4-20mA, 0/1-5V or 0/2 -10V. It can be ranged over a reduced portion of the total instrument range - if the instrument is set for 0-760C, the retransmission can be configured to to be say 0-300C for the full 4-20mA  Price:  £25.00   (Excluding: VAT at 17.5%)
	RS485 Comms module This module allows up to 32 instruments to be connected on one 2 wire RS485 data highway using West ASCII protocol. Modbus protocol is available, but to special order only. Please email your enquiry. See S4SCADA.com for suitable Software packages  Price:  £38.00   (Excluding: VAT at 17.5%)
Dual Setpoint Module/Heater Current This module allows the remote selection (by contact closure) of a second setpoint value or accepts the output from the current transformer. Note that this module is mutually exclusive with the RS485 comms module.  Price:  £19.00   (Excluding: VAT at 17.5%)