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ICPDAS I-87089W
1-channel Vibrating Wire Input Module
● Support 8 ~ 32 Vibrating Wire inputs
● Support 450 ~ 6000 Hz Vibrating Wire sensor
● Support channel to channel isolation
The vibrating wire sensor has a wire which is initially plucked by a series of electrical magnetic forces from a coil. The conductive wire after plucking is vibrating in a magnetic field. The wire will disturb the field, and then the coil can pick up the induced voltage change. The signal is amplified and detected by a VW readout device, or called VW reader. After plucking, there is no other force acting on this wire. When the transient response dies out, the reader can read a stable resonant frequency. The resonant frequency is function of the tension of this wire.
With different communication interface, the I/O modules can be classified to high communication speed (Parallel bus) 8K series modules and low communication speed (serial interface) 87K series modules.
There are two types of I/O modules, Parallel and Serial. The parallel modules (I-8 Series) are high-speed modules and support MCU (Main Control Unit) only. | |
Item | I-87K Series |
Communication Interface | Serial Bus |
Protocol | DCON |
Communication Speed | Slow |
DI with Latched Function | Y |
DI with Counter Input | Y (100 Hz) |
Power On Value | Y |
Safe Value | Y |
Programmable Slew-rate for AO Module | Y |
High Profile VS Low Profile
With different form factor, I/O modules can be classified to high profile and low profile. Basically, high profile and low profile modules that with same item number also have same I/O channel number.
For example: I-8054 and I-8054W both has 8 DI and 8 DO.
Except I/O channel number, other specifications could be different. You have to double check whether the specifications suit your application.
For example: For I-8054W, its DI logic high level is +10 ~ +50V. But for I-8054, it is +3.5 ~ +30V
I-87K Series | ||
High Profile | Low Profile | |
XPAC | Y | - |
WinPAC | Y | - |
LinPAC | Y | - |
iPAC | Y | - |
ViewPAC | Y | - |
RU-87P1/2/4/8 | Y | - |
USB-87P1/2/4/8 | Y | - |
WinCon | Y | Y |
LinCon | Y | Y |
I-8000 | Y | Y |
I-8KE4/8 | Y | Y |
I-8KE4/8-MTCP | Y | Y |
I-87K4/5/8/9 | Y | Y |
APPLICATIONS:
The ICPDAS Counter/Frequency Module I-87089W/S can be extended to 32 channels by connecting 3 extra DN-1618UB.
Input Channels | 8 | ||
Input Type | Vibrating Wire Sensor (2 VW wire + 2 Temperature wire +1 shield wire) | ||
Measuring Range |
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Excitation Mode | Enhanced square wave | ||
Resolution |
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Channel to channel isolation | Yes, 1 kV |
Dual Watchdog | Yes |
Isolation | 3000 VDC |
Connector | D-Sub 37 |
RS-485( Data+, Data-) | D-sub 37-pin connector with 3000VDC isolation |
Protocol | 115200, 8, N, 1 |
2 LEDs | Power Indicator |
8 LEDs | 8-channel relay Indicator @ DN-1618UB |
Power Consumption | 3.6 W |
Dimensions (w x l x h) | 30 x 102 x 115 mm |
Operating Temperature | -25 °C ~ 75 °C |
Storage Temperature | -30 °C ~ 85 °C |
Humidity | 5 ~ 95% RH, non-condensing |