Comparison of DC-120, DC-150 and DC-155 Servo Interface Modules

Function/
Feature
DC-120
(discontinued)
DC-150
(discontinued)
DC-155
Photo
Protocol VersioBus VersioBus VersioBus II
Dimensions
104 mm x 176 mm x 34 mm deep (excluding DIN rail)
 185 mm (height excluding brackets) x 75 mm x 134 mm deep
185 mm (height excluding brackets) x 75 mm x 134 mm deep
Mounting
Flush mount (for side DIN rail mounting)
 Brackets and screws – can be mounted in a control panel or in a pocket
Brackets and screws – can be mounted in a control panel or in a pocket
Additional power grounding point?
No
 Yes, with additional LED
Yes, with additional LED
Input Power
24 VDC ± 10%, maximum load current 750 mA (20° C), 600 mA (40° C)
 24 VDC ± 15%, maximum load current 800 mA
24 VDC ± 15%, maximum load current 800 mA
Output Power for Servo-Related I/O
24 VDC ± 10%, isolated, maximum total load current 250 mA
 24 VDC ± 15%, maximum total load current 250 mA
24 VDC ± 15%, maximum total load current 250 mA
Output Power for Encoder(s)
Not available
 5 VDC ± 15%, isolated, maximum load current 1000 mA/unit
5 VDC ± 15%, isolated, maximum load current 1000 mA/unit
Analog inputs?
None
 None
None
VDC Input
2 12-24 VDC inputs per unit
 None
None
General I/O Connector Digital Inputs

Input Voltage Range: 10.2 to 26.4 VDC OR -10.2 to -26.4 VDC
ON Voltage Level: 10.2 VDC min.
OFF Voltage Level: 3.5 VDC max.
One more resistor than the DC-150

 Input Voltage Range: 10.2 to 26.4 VDC OR -10.2 to -26.4 VDC
ON Voltage Level: 10.2 VDC min.
OFF Voltage Level: 3.5 VDC max.
One less resistor than the DC-120		 Input Voltage Range: 10.2 to 26.4 VDC OR -10.2 to -26.4 VDC
ON Voltage Level: 10.2 VDC min.
OFF Voltage Level: 3.5 VDC max.
One less resistor than the DC-120
General I/O Connector Digital Outputs

Operating Range: 10.8 to 26.4 VDC OR -10.8 to -26.4 VDC

Type: N-Ch MOSFET

Maximum Load Current:

  • 1.0 A per point
  • 5.0 A per common ground
  • 1.0 A per common terminal

Wired differently than the DC-150 and DC-155

Operating Range: 10.8 to 26.4 VDC OR -10.8 to -26.4 VDC

Type: Opto-isolated

Maximum Load Current:

  • 100 mA per point
  • 500 mA per common ground
  • 100 mA per common terminal

Wired differently than the DC-120

Operating Range: 10.8 to 26.4 VDC OR -10.8 to -26.4 VDC

Type: Opto-isolated

Maximum Load Current:

  • 100 mA per point
  • 500 mA per common ground
  • 100 mA per common terminal

Wired differently than the DC-120

Last revision 01/06/09