Kit Contents

Item	Qty	Notes
AC Current Transducer	2*	Transducers feature 2.5m tail cable - bare ends Specification dependant on application - see below
VTI21 Smart Sensor	1	Main transducer body
2-Way 3.81mm Plug Connector	5	For all transducer connections
M3 Grub Screw	2	For securing current transducers to VTI21 chassis
M5 Hex Bolt	2	For general panel mounting
M5 Nut	2	For general panel mounting
M5 Machine Screw	2	For BR930/Q Style Bracket Mounting
No.8 Wood Screw	2	For Backboard mounting

*VTI21-TI21 variants presently only feature 1 x transducer

Current Transducers (VTI21-ASTER, VTI21-UM71)


Analogue Inputs
Bandwidth	20kHz
Range	+/-1.25V Differential Input
Resolution	from 74μV to 2.4mV (Inputs feature programmable Gain)
Accuracy	1% - SCT-0400-001-NCAP, SCT-0400-010, SCT-0400-005, SCT-0400-025 10% - SCT-0400-001-40K
Analogue Output
Bandwidth	500 Hz
Range	0-20mA Current Loop Output
Resolution	19.5μA
Accuracy	<1%
Serial Output
Physical Layer	EIA RS485
Baud Rate	115,200 bps
Protocol Layer	MPEC Raildaq
Power Supply
Voltage	12V to 24V DC
Power Consumption	12V 4-20mA Mode: 0.7W 12V RS485 Mode: 0.5W 24V 4-20mA Mode: 1.1W 24V RS485 Mode: 0.8W