SMV2BRK

SMV2BRK boards

SM V2 multidrop bus with E-stop functionality

SMV2BRK is a product name for for SimpleMotion V2 break out board. The purpose of SMV2BRK is to:

• Terminate the RS485 bus (be the last device on the bus with proper termination impedance)
• Break out the enable and STO signals for easy wiring through wire terminals

Before using SMV2BRK, be sure to understand SimpleMotion V2 port.

Functionality

Dimensions and pin-out of SMV2BRK

SMV2BRK has two connectors X1 (SimpleMotion V2 RJ45 connector) and X2 (wire terminal for Enable and STO signals).

STO

Depending on drive model, they have one or two Safe Torque Off inputs that prevent drive producing any torque to motor if activated. STO has high reliability and is hard-wired to drive power stage making it very reliable aid for machine safety. If drive has two STO inputs, then both STO1 and STO2 must be inactivated simultaneously for drive to operate. STO inputs are designed to be used on emergency stopping situations and not during normal every day drive control.

Enable

Every SMV2 compatible drive listens enable signal through SMV bus. Enable signal is a software based enable and useful for non-safety related motor stopping in normal operation.

Pin-out

Pin	Name	Function
1	GND	Ground for 24V power supply. Will be same tied with ground of drive logic supply voltage and SimpleMotion V2 USB adapter (PC ground).
2	V_IN	24VDC supply to SMV2BRK. Use same 24V supply that is used to feed drive 24V logic voltage.
3	ENA	Enable signal input. Drives disabled when open circuit or pulled to GND, enabled when connected to 24VDC.
4	V_OUT	24V output, connected to V_IN through on-board fuse. Used to feed voltage to switches.
5	STO1-	STO number 1 negative input. When STO in inactive (motor able to produce toreque), tie GND to this pin. To activate STO1, leave STO1-, STO1+ or both floating.
6	STO1+	STO number 1 positive input. When STO in inactive (motor able to produce toreque), tie V_OUT to this pin. To activate STO1, leave STO1-, STO1+ or both floating.
7	V_OUT	24V output, connected to V_IN through on-board fuse. Used to feed voltage to switches.
8	STO2	STO number 2 input. STO2 is referenced to GND and to inactivate STO2, connect V_OUT to STO2. To activate STO2, leave floating.
9	V_OUT	24V output, connected to V_IN through on-board fuse. Used to feed voltage to switches.

Usage

SMV2BRK is intended to be wired to E-stop button of the motion control system. The following diagram illustrates the preferred wiring:

For testing purposes, or if no STO or Enable need to be controlled, SMV2BRK may be wired by short pieces of wire which always keep STO disabled and Enable active:

Availability

SMV2BRK is available through Granite Devices web shop.

In no event the Product Information or parts hereof shall be regarded as guarantee of conditions or characteristics. The Product Information or any part thereof may also not be regarded as a warranty of any kind. No liability of any kind shall be assumed by Author with respect to Product Information or any use made by you thereof, nor shall Author indemnify you against or be liable for any third party claims with respect to such information or any use thereof.

As content of this Wiki may be edited by user community, Granite Devices Oy or it's affiliates do not take any responsibility of the contents of this Wiki. Use information at your own risk. However, Granite Devices staff attempts to review all changes made to this Wiki and keep information trustworthy.

Without written consent, Granite Devices' Products or Intellectual Property shall not be used in situations or installations where living beings, material property, or immaterial property could be harmed by the operation, features or failures of Product. Products may only be used in a way where hazards like moving parts, electric shock, laser radiation, or fire can't be realized even if the content of this Wiki would suggest otherwise.