TSCU-R
Tunnel Sensors Control Unit Rugged Version
The TSCU-R is a central control unit designed for operation with compatible Tunnel Sensors instruments including the VICONOX, AIRFLOW-MkII and CROSSFLOW within the tunnel environment.
TSCU-R
The TSCU-R is a central control unit designed to be mounted in the tunnel bore but at a level and location that is more accessible than most monitor installations high up on the tunnel wall. The TSCU-R’s on board USB socket enables a laptop computer with Tunnel Sensors utility software to communicate with the monitors.
The TSCU-R can connect with up to eight monitors on a common RS485 communication bus, gathering all available readings in real time using a single daisy chain cable connection. It can then present the data to the tunnel SCADA or ventilation control system using a range of onboard interfaces including Digital Relays, Current Outputs and Modbus RTU serial communication.
With an enclosure made from stainless steel that provides IP67 rated ingress protection, the TSCU-R is a dedicated communication hub designed for harsh tunnel environments.
Features
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Connect up to 8 instruments on a single RS485 daisy-chain connection
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Dedicated quick lock plug connections, with power, for two local instrument connections
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Programmable digital outputs and isolated analogue outputs
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Isolated RS485 (Modbus RTU) output
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Clearly marked DIN rail screw terminals
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Optional analogue output Over Voltage Protection for increased resilience against transient voltages
Benefits
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Rugged design to withstand corrosive atmospheres and regular tunnel washing
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High quality 316 stainless steel construction ensuring a long service life
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Enhanced over-voltage protection on AC power supply and Modbus RTU connections
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External USB and PC Utility software for easy communication with Tunnel Sensors monitors high up on the tunnel wall.
Specification
Instrument Interface
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
1 | Connected Instruments | 8 | RS485 serial bus comms. connection only | ||
2 | Instruments Powered by TSCU-R | 2 | 24Vdc power and serial bus comms. | ||
3 | Connection Cable Length | km | 1 | Comms. only. Total daisy-chain length | |
4 | Connection Cable Length | m | 25 | Power and comms. to each instrument |
Tunnel Interface
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
5 | Serial Comms. | 1 | Modbus RTU via isolated RS485 | ||
6 | Analogue Outputs | 12 |
Options for 0, 4, 8, or 12 analogue output channels | ||
7 | Analogue Output Current | mA | 0 / 2 / 4 | 20 | Isolated, scalable and programmable |
8 | Volt Free Relay Contacts | 12 | Options for 0, 4, 8, or 12 relay contacts | ||
9 | Volt Free Relay Contacts Current | A | 0 | 1 | @ 30Vdc. Programmable |
10 | USB | 1 | Pass through to all connected instruments |
Electrical
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
11 | AC Supply Voltage | Vac | 85 | 264 | Nominal 100-240Vac |
12 | AC Supply Frequency | Hz | 50 | 60 | |
13 | AC Supply Current | A | 1.4 | ||
14 | AC OVP Limit | Vac | 264 | Standard | |
15 | RS485 (Modbus) OVP Limit | Vac | 12 | Optional OVP version | |
16 | Analogue Output OVP Limit | 24 | Optional OVP version | ||
17 | Terminal Wire Gauge | AWG | 24 | 12 | |
18 | Terminal Wire Conductor Area | mm2 | 0.2 | 2.5 | |
19 | Cable Gland Quantity | 5 | |||
20 | Cable Gland Size | mm | 6 | 12 | Acceptable cable diameter. Thread: M20 |
Physical
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
21 | Ingress Protection | IP67 | |||
22 | Operating Temperature | °C | -40 | +50 | |
23 | Operating Humidity | % | 100 | ||
24 | Materials | AISI/SAE 316L Stainless steel - Powder coated | |||
25 | Dimensions | mm | 375 x 246 x 145 | ||
26 | Weight | kg | 6 |
Compliance & Design
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
27 | Design Life | Years | 20 | ||
28 | MTBF | Years | 20 | ||
29 | Warranty | Months | 24 | Return to base warranty. Extensions available |
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