The VC2100 and VC2124 two-axis voltage-to-current converters transform ±10V signals into current signals capable of driving hydraulic servo valves or similar loads. They also provide a convenient way to set the full scale current to match valve requirements, limit maximum current and set optimum working ranges.
The VC2100 and VC2124 provide full scale range (FSR) output current for each channel is switch-selectable from ±10mA to ±100mA in 10mA steps.
The VC2100 requires a ± 15VDC power supply. The VC2124 requires a 24VDC power supply.
See Delta's website at www.deltamotion.com for more details on these voltage-to-current converters.
VC2100 Output Characteristics
This table shows the minimum output drive voltage and maximum load resistance for various output currents and power supply voltages.
|
Output |
±15V ±5% Supplies |
±12V ±5% Supplies |
||||
|
Current |
Vout |
Maximum |
Vout |
Maximum |
||
|
mA |
Typ |
Min |
Load W |
Typ |
Min |
Load W |
|
10 |
13.7 |
12.7 |
1265 |
10.7 |
9.8 |
980 |
|
20 |
13.2 |
12.2 |
608 |
10.2 |
9.3 |
465 |
|
30 |
12.7 |
11.7 |
388 |
9.7 |
8.8 |
293 |
|
40 |
12.2 |
11.2 |
279 |
9.2 |
8.3 |
208 |
|
50 |
11.7 |
10.7 |
213 |
8.7 |
7.8 |
156 |
|
60 |
11.2 |
10.2 |
169 |
8.2 |
7.3 |
122 |
|
70 |
10.7 |
9.7 |
138 |
7.7 |
6.8 |
97 |
|
80 |
10.2 |
9.2 |
114 |
7.2 |
6.3 |
79 |
|
90 |
9.7 |
8.7 |
96 |
6.7 |
5.8 |
65 |
|
100 |
9.2 |
8.2 |
82 |
6.2 |
5.3 |
53 |
The VC2100 can drive a short circuit to common—an internal 50W current-limiting resister limits the output current. The output amplifier will shut down under severe overload (such as driving a short to a power supply).
Wiring
VC2124
Fuse 24Vdc input with 5A maximum, UL-listed, fast-blow fuse. One fuse suffices for up to 10 VC2124s. For maximum protection, use one 500mA fuse per VC2124.
For noise immunity, use twisted, shielded pairs for all connections (twisted pair with overall shield is acceptable). For best noise immunity and CE compliance, keep wires from the RMC to the VC2124 as short as possible and less than 98ft (30m), and place ferrites on all cables as close to the VC2124 as possible. Sample ferrite part numbers from Steward: 28A2029-0A0 or 0A2, 28A5131-0A2, 28A0593-0A2, 28A0807-0A2, 28A3851-0A2, 28A2024-0A0 or 0A2.
VC2100
Fuse the ±15Vdc inputs with 5A maximum, UL-listed, fast-blow fuses. For maximum protection, use two 500mA fuses per VC2100.
For noise immunity, use twisted, shielded pairs for all connections (twisted pair with overall shield is acceptable). For best noise immunity, keep wires from the RMC to the VC2100 as short as possible and less than 98ft (30m), and place ferrites on all cables as close to the VC2124 as possible. Sample ferrite part numbers from Steward: 28A2029-0A0 or 0A2, 28A5131-0A2, 28A0593-0A2, 28A0807-0A2, 28A3851-0A2, 28A2024-0A0 or 0A2.
|
Terminal |
Function |
|
A |
+15 volt supply in |
|
B |
Power supply common |
|
C |
-15 volt supply in |
|
D |
Voltage Input 1 |
|
E |
Common |
|
F |
Voltage Input 2 |
|
G |
Current Output 2 |
|
H |
Common |
|
J |
Current Output 1 |
Copyright (c) 1997-2015 by Delta Computer Systems, Inc.