Vc2100 and vc2124 voltage-to-current converters – Delta RMC101 User Manual
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RMC100 and RMCWin User Manual
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4.11 VC2100 and VC2124 Voltage-to-Current
Converters
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.