Valcom VSM3 Series
- Multiple process inputs: 1~5V, ±5V, 4~20mA, and ±20mA
- High speed sampling at a maximum of 1000 samples per second.
- Models with analog outputs are multiple output type that enables scaling at any range among 0 to 1 V, 0 to 10 V, 1 to 5 V, and 4 to 20 mA.
- CE-compliant (* Supply voltage, DC drive only)
- Compact design of 72 (W) × 36 (H) mm (DIN standard) and space-saving, with an easy-to-read large monitor of 16 mm in character height.
- LED alternates between red and green, allowing the judgment result to be identified by color.
- Five comparison setting outputs and various functions included as standard.
”Start hold”, “Digital zero”, “Peak hold” and “Pattern select” functions included.
Various Functions
Pattern Select Function
This function stores up to eight patterns of scaling data and comparator data, and allows the users to set patterns as desired.
Pattern selection can be controlled either via terminals or via front keys according to the condition data setting. In case of control via terminals, short the terminals between P.SEL1 to 3 and COM or make them equipotential to enable pattern switching from P-1 up to P-8. In case of control via front keys, hold down the increment key for approx. 3 seconds to switch patterns.
Start Hold Function
This function holds the display at the desired timing. Either A or B type can be set according to the condition data.
A type is a free run mode. In the free run condition, shorting S/H and COM terminals or making them equipotential will hold the displayed value and the comparison judgment value.
B type is a one-shot mode. In the hold condition, shorting S/H and COM terminals or making them equipotential will output the displayed value and the comparison judgment value once.
Peak Hold Function
This function holds any of the maximum (peak) value, the minimum (valley) value, and the difference between the maximum and the minimum (peak – valley) and outputs the value held. (The value to be held is switched according to the condition data.)
Shorting S/H and COM terminals or making them equipotential will turn ON the peak hold function.
Digital Zero Function (Display reset function)
This function forcibly zeros the displayed value. It is useful when subtracting tare weight during load measurement with load cells connected.
Display reset (Digital zero) function ON/OFF can be controlled via terminals or via front keys according to the condition data setting.
In case of control via terminals, shorting the terminals between DZ and COM or make them equipotential to turn ON the display reset function. In case of control via front keys, hold down the shift key for approx. 3 seconds to turn ON the function.
Specification
| Display | 7 segments LED display(Character height: Approx. 16mm) |
|---|---|
| Polarity Display | Displayed automatically for negative results. |
| Display Range | -9999~9999 |
| Overrange Display | OVER or –OVER for any input signal outside the display range. |
| Decimal Point | Can be set at any desired place. |
| Zero Display | Leading zero suppress |
| Outer Control | P.SEL1~3, HOLD, PH, DZ(By output unit) |
| Use Temperature Range | 0~50°C |
| Use Humidity Range | 35~85%RH(No condensation) |
| Storage Temperature Range | -10~70°C |
| Storage Humidity Range | 60%RH or less |
| Power | AC power: AC100~240V±10% DC power: DC12V~48V±10% |
| Power Consumption | 8VA max.(AC power-supply unit) 7W max.(DC power-supply unit) |
| Dielectric Strength | AC power: Power terminal – Input terminal / COM / Comparative output / BCD / 1500V AC for 1 minute between RS communication terminals |
| DC power: Power terminal – Input terminal / COM / Comparative output / BCD / 500V DC for 1 minute between RS communication terminals | |
| (Common)Input terminal – Comparative output / BCD / Analog output / 500V DC for 1 minute between RS communication terminals / 1500V AC for 1 minute between case and terminals |
|
| Insulation Resistance | 100MΩ min. at 500V DC between above terminals |
| Dimensions | 72mm(W)×36mm(H)×123mm(D) |
| Weight | Approx. 160g |
| Accessories | Operation manual (1 copy) |
Process signal input specifications
| Measuring Range | Range 1V: 1~5V Range 2V: ±5V Range 2A: 4~20mA Range 3A: ±20mA |
|---|---|
| Display | Offset: ±9999 Scaling: ±9999 |
| Input Impedance | Range 1V, Range 2V: Approx. 1MΩ Range 2A, Range 3A: Approx. 10Ω |
| Maximum Safe Input | Range 1V, Range 2V: ±100V Range 2A, Range 3A: ±50mA |
| Accuracy | Range 1V, Range 2V: ±(0.03% of rdg +2digit)(23°C±5°C 35~85%) Range 2A, Range 3A: ±(0.1% of rdg +3digit)(23°C±5°C 35~85%) |
| Sensor Power Supply | DC24V±10% 25mA or DC12V±10% 25mA |
| Sampling speed | Approx. 1000 times/sec. |
* Accuracy applies when the sampling rate is 20 samples/s or less.
Comparison output specifications
| Control Method | Microcomputer-based | |
|---|---|---|
| Trigger Value Range | -9999~9999 | |
| Hysteresis | Can be set in the range of 1 to 999 digits for each value. | |
| Comparison Operation | Depends on the sampling rate. | |
| Comparison Condition | Displayed value>HH trigger value>HI trigger value | Judgment: HH, HI |
| HH trigger value≥Displayed value>HI trigger value | Judgment: HI | |
| HI trigger value≥Displayed value≥LO trigger value | Judgment: GO | |
| LO trigger value>Displayed value≥LL trigger value | Judgment: LO | |
| LO trigger value>LL trigger value>Displayed value | Judgment: LO, LL | |
| Setting Condition | HH trigger value>HI trigger value>LO trigger value>LL trigger value | |
| Comparison Relay | Number of Contacts | Relay contact ×5 |
| Contact Rating | AC125V 0.3A(Resistive load) DC30V 1A(Resistive load) |
|
| Mechanical Lifespan | More than 50 million times | |
| Electrical Lifespan | 100,000 times or more (Resistive load) | |
| Photo-coupler Output | Number of Output | Photo-coupler ×5 |
| Output Constant | Sink current: 50mA MAX. Applied voltage: 30V MAX. Output saturation voltage: 1.2V or less at the occasion of 15mA |
|
Analog output specifications
| Load Resistance | 0~1V, 0~10V, 1~5V: 10kΩ or more 4~20mA: 550Ω or less |
|---|---|
| Accuracy | ±(0.5% of FS) |
| Ripple | 0~1V, 0~10V, 1~5V: ±50mVp-p 4~20mA: ±25mVp-p |
| Conversion Method | PWM conversion method |
| Resolution | Equivalent to max. 13 bits (depends on output display setting) |
| Scaling | Digital scaling |
| Response Time | Approx. 0.5 sec. |
RS-232C output specifications
| Synchronization mode | Asynchronous |
|---|---|
| Communication method | Full-duplex |
| Baud rate | 38.4k~2.4k bps |
| Start bit | 1bit |
| Data length | 7bit/8bit |
| Parity | Even/ Odd / None |
| Stop bits | 1bit/2bit |
| Character code | ASCII |
| Signal name | TXD, RXD, SG |
| No. of units connected | 1 unit |
| Path length | 15m |
| Delimiter | CR+LF/CR |
RS-485 output specifications
| Synchronization mode | Asynchronous |
|---|---|
| Communication method | 2-wire half-duplex |
| Baud rate | 38.4k~2.4k bps |
| Start bit | 1bit |
| Data length | 7bit/8bit |
| Parity | Even/ Odd / None |
| Error detection | BCC checksum |
| Stop bits | 1bit/2bit |
| Character code | ASCII |
| Signal name | Non-inverted(+), Inverted(-) |
| No. of units connected | 31 units |
| Path length | Up to 500m |
| Delimiter | CR+LF/CR |
