VAF instruments 667 - 3. TECHNICAL SPECIFICATIONS; SPU3 Specifications

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3. TECHNICAL SPECIFICATIONS
SPU3
Drawing 0815-1120 (section 17)
Supply voltage
115 - 230 VAC
Power consumption
30 W max.
Protection class
IP65
Net weight
Approx. 10 kg
Operating temperature
Lower than 55⁰C
Dimensions
660 x 300 x 165 mm (w x h x d)
CPU
Beagle Bone, Sitara AM3359AZCZ100, 1GHz, SDRAM 512MB
DDR3L 800 MHZ, On board flash 2GB, 8bit embedded MMC
Flowmeter pulse inputs
(backplanes)
Number of pulse inputs
12 flowmeters (max. 8 engines/boilers)
Input type
VAF Instruments PT2 sensor or Namur
Max. freq. pulse input
1000 Hz
Threshold voltage
3 V
Maximum pulse voltage
8,2 V
Flowmeter temperature inputs
(backplanes)
Number of temp. inputs
12
Input type
3 wire PT100
Range
0⁰C to 200⁰C
Accuracy
± 1⁰C
Update time
1 Hz
Analogue inputs
(backplanes)
Max. 9x optional analogue inputs
(3 analogue modules with 3 analogue inputs each)
Range per analogue input 4-20mA each. Ri = 100Ω
Used for:
• Max. 2 shaft generators
(1 analogue input each)
• Max. 2 torque meters e.g. VAF-Palco - Torque/speed/power
(3 analogue inputs each)
• Max. 6 auxiliary power - Total auxiliary power
(1 analogue input each)
• Max. 6 ViscoSense
®
3D - Density, Temperature and Viscosense
(3 analogue inputs each)
• Max. 4 draft meters – Front, Middle SB, Middle PS, Back
(1 analogue input per meter)
• Max. 1 Inclino meter – Pitch, Roll, Yaw
(1 analogue input per signal)
Signal input
(J1) T1 or T1+T2
Input signal from T-Sense
®
,TT-Sense
®
sensors or Auxiliary Engines.
RS485 (2-wire), Baud rate: 19200, Data bits: 8, Parity: none, Stop bits:
2,
Flow control: None
(max1200m cable length)
Signal input
(J2) T2 or Aux1
Input signal from T-Sense
®
, TT-Sense
®
sensors or Auxiliary Engines
RS485 (2-wire), Baud rate: 19200, Data bits: 8, Parity: none, Stop bits:
2,
Flow control: None
(max1200m cable length)
Modbus output
(J3)
Modbus connection
For data transfer to an external system like AMS or for connection to a
separate PC running (optional) SPU3 data logger software.
RS485 (2-wire) Baud rate: 57600, Data bits: 8, Parity: none, Stop bits:
1,
Flow control: None, Function code 3 (Holding Registers), Modbus slave
address 1
(max1200m cable length)