Digital Axis Control HNC 100

General Notes, Guidelines

Place of Installation:

• Do not install the HNC next to power electronics (e.g., frequency converters).
• Install the power supply unit as close as possible to the HNC.

Grounding:

• The HNC can be grounded in terms of HF by connecting the aluminum backpanel of the housing with the backpanel of the control cabinet using screws (4 x M4).

Power Supply:

• Operating voltage range: 18 - 36 VDC.
• Residual ripple content: < 1.5 Vpp; I = 1 A.
• Input fuse: F 1.25 A (recommendation).
• Establish the connection between the power supply unit and the HNC.
• Install the supply and return conductors (+24 V/GND) together.

Shielding:

• Only use cables with copper braiding shields as signal cables.
• The shield should usually be connected on the HNC side only. Connect the shield on a large contact area to the metallized plug housing (by clamping it under the cable grip). Exceptions apply for special encoder types (see application example of SSI encoders).
• Only use cables with the actual number of wires required. If necessary, connect the remaining wires to GND on both ends.

Supply of External Components:

• Digital position measuring systems (24 V or 5 V):
• Encoder interface: 5 VENC (internal 5 VTTL-voltage; Imax = 150 mA per axis), 24 V VENC (voltage from X6 via network filter; Imax = 200 mA per axis).
• Analog components (e.g., pressure cells) must be supplied externally.
• Ensure sufficient wire cross-section for supply. GND cables must be generously dimensioned. Use multiple wires for Vcc and GND if required.
• 24 V supply sensors may require higher voltage quality. The power supply must meet the requirements of the most sensitive component.
• For applications with multiple HNCs and analog sensors, consider separating the supply to the HNC and sensors. Ensure separate power supply potentials are connected.
• Information on cabling and separate power supply units is available in application notes for HNC100-1-2x (contact support.nc-systems@boschrexroth.com).

Cabling:

• Separate signal and load cables physically; do not lay them in parallel.
• Do not route signal cables through strong magnetic fields.
• Install signal cables without interruptions where possible. Avoid intermediate terminals. (AD/DA socket X2; SUBCON connectors by Phoenix simplify cabling).
• Power cables (2 individual wires for voltage supply) should be laid in parallel or twisted.

Interference Suppression of the System:

• DC: Anti-parallel free-wheeling diode in parallel to the actuator winding.
• AC: Type-related R/C combination in parallel to the actuator winding.
• Electric Motors: R/C combinations from each motor winding to ground, input filter in the voltage supply of the frequency converter (FC), shielding and separate installation of motor control cable, output filter for motor cables, large-area contact between FC housing and backpanel of the control cabinet.

Connecting Cable V24 HNC100 - V24 PC

This section details the wiring between the HNC100 and a PC via a V24 interface.

Cable Details:

Recommended Cable Type: LiYCY (5x0.14 mm²)

Wiring Description:

The connection uses 9-pole D-SUB plugs on both the HNC100 (X4) and PC ends. The cable shield is connected to the strain relief device of the plug housing.

Pin Mapping:

Connector Pin Assignments

This section details the pin assignments for various connectors on the HNC100 series.

VT-HNC100-1-2X/...-08-... (One Axis)

X4: COM / local CAN

X5: Communication with higher-level control

X6: Voltage Supply

X7: Communication with higher-level control

X8: Local CAN

S1, S2 Address, Baudrate CAN

This table defines the configuration of CAN bus addresses and baud rates using S1 and S2 jumpers.

Connector Pin Assignments

This section details the pin assignments for various connectors on the HNC100 series.

VT-HNC100-2-2X/...-16-... (Two Axis)

This section details the pin assignments for the two-axis version.

X4: COM / local CAN

X5: Communication with higher-level control

X6: Voltage Supply

X7: Communication with higher-level control

X8: Local CAN

S1, S2 Address, Baudrate CAN

This table defines the configuration of CAN bus addresses and baud rates using S1 and S2 jumpers.

Extended Connector Pin Assignments (Multiple Ports)

The HNC100 can feature multiple identical or similar ports (e.g., X1.1, X1.2, X1.3 for Digital I/O; X2.1, X2.2 for Analog IN/OUT; X3.1, X3.2 for Encoder).

X1.1, X1.2, X1.3: Digital I/O Ports

X2.1, X2.2: Analog IN/OUT Ports

X3.1, X3.2: Encoder Ports

Application Examples

Application Example HNC100 - INC-encoder

This example shows the connection of an incremental encoder to the HNC100 using the X3/X3.1/X3.2 interface. The recommended cable type is LiYCY (TP) 4x2x0.25 mm², with a maximal cable length of 50 m. The cable shield is connected to the strain relief device of the plug housing.

Wiring Description:

Application Example HNC100 - SSI-encoder

This example details the connection of an SSI encoder to the HNC100 using the X3/X3.1/X3.2 interface. The recommended cable type is LiYCY (TP) 4x2x0.25 mm², with a maximal cable length of 50 m. The cable shield is connected to the strain relief device of the plug housing.

Wiring Description:

Note: If control cabinet and system reference potentials are identical, the shield must be connected on both ends. If they are different, connect the shield via a C = 47-680 nF on the encoder side.

Application Example: Local CAN

This example illustrates the setup for a Local CAN bus connection. It shows multiple HNC100 units connected in a chain. A plug terminator (R = 120 Ω) is required on X8 of the last HNC between PIN 8 and PIN 9.

Wiring Description:

The diagram shows a series connection of HNC100 units via X4 and X8 connectors. The pin assignments for X4 (COM / local CAN) and X8 (local CAN) are detailed in previous sections. The diagram depicts the physical layout of these connections.

Field Bus Systems

The HNC100 functions as a slave in conjunction with various field bus systems. Guidelines for wiring, cable selection, and bus termination can be found in the documentation of the relevant master assembly.

Profibus-DP

HNC100 COM2 X5

Further technical support: Profibus user organization (PNO) DIN19245.

CANopen

HNC100 aux X7

Further technical support: CiA (CAN in Automation) EN 50325-4 (DS-301).

Interbus S

HNC100 X7 (IN interface)

HNC100 X5 (OUT interface)

Further technical support: INTERBUS-S Club DIN 19258, EN 50254, IEC 61158.

SERCOS

SERCOS coupling is achieved via an optical fibre adapter. Further technical support is available from Interessengemeinschaft Sercos e.V. (IGSev).