Masibust VT7S12E, User Manual

Page: 7 / 29

VIBRATION TRANSMITTER-VT7S12E
Ref No: mVTD/om/201
Issue No: 02
User’s Manual - 7 -
3.5 Environmental specification

Ambient Temperature
: 0 to 55 °C

Humidity
: 30 to 95% RH non-condensing

Storage Temperature
: 0-85°C

Warm-Up Time of Instrument
: 15 Min.
3.6 Output relay specification

No of Relays
: Four

Purpose
: Alarm or trip

Output Signal
: 1 Form C Configuration

Delay for relay : 05 - 50 sec to avoid false tripping.

Relay contact Rating
: 2A @250VAC/30VDC & 5A @250VAC (optional)
3.7 Analog output specification

No. of Analog Output : Two

Output Signal
: 0-20 mA, 4-20 mA or 0-5 V, 1-5 V, 0-10 V DC (Voltage or
current outputs are factory settable)

Load Resistance : For current output, 500 ohms Max. For Voltage output,
3000 ohms Minimum.

Output Accuracy
: ±0.25 % of Full Range(Display to output)
3.8 Rs-485 communication specification (optional)

No. of Communication Port
: 1- RS485

Protocol
: Modbus RTU.

Parity
: 2-Stop bit Parity none, 1-Stop bit Parity Even and 1-Stop
Bit Parity Odd.

Baud Rate
: 9600,19.2K

Maximum No. of Unit
: 32

Communication Error Detection
: CRC Check
3.9 Buffer output specification

No. of output
: Two

Output Impedance
: <100 Ohms

Frequency Range
: 0.5 Hz to 10KHz

Accuracy : 0.25% of Full Range
3.10 Signal isolations and insulation specification

Isolation Rating
: Withstanding Voltage:
1) Between primary terminals
(3)
and secondary terminals
(4)
1500VAC for 1 minute
2) Between secondary terminals 500V AC for 1 minute

Insulation Register
: > 20 Mohms at 500V DC

Signal Isolation
: As Specified below Table:2
Sr
No
Signals Signal Isolation
1 Power Input Isolated from other input/output terminals and internal circuit
2 Analog Inputs
Not isolated from other analog input terminals and from the internal
circuit. But isolated from other input/output terminals.
3 RS-485 Communication Isolated from other input/output terminals and internal circuit
4 Relay contacts
Isolated between contact output terminals and from other
Input/output terminals and internal circuit
5 Analog Output Isolated from other input/output terminals and internal circuit
Table 3 Signal Isolation Specification
(3)
Primary terminals indicate power terminals and relay output terminals
(4)
Secondary terminals indicate analog input signals, Digital Contact output terminals, communication Terminal.