SBS System – SB-1000 Operation
23
Hardwire Interface
Interfacing the SB-1000 with a CNC or PLC machine controller is supported via a hardwire interface. The
hardwire interface is provided via a standard DB-25 connector located on the rear panel. Because of the
many possible variations and configurations of cabling required for such an interface, it is left to the operator
to supply the necessary cable.
When designing an interface for the SBS System, it is important to understand that the grinding
machine's controller must operate the SBS System
. It is not possible for the SBS System to control the
grinding machine.
Carefully read this entire manual before attempting to interface the SB-1000 with any machine controller.
Hardwire Interface Overview
The hardwire interface consists of three sections: interface power supply, the inputs, and the outputs.
The interface power supply is provided exclusively for use with the hardwire interface inputs. It consists of
three common pins and one output pin. The common pins are internally connected to chassis ground. The
output provides a maximum of 30 mA at approxi15VDC. Any external power used for interface I/O
must be from a SELV (Safety Extra Low Voltage) source or supply.
The three inputs provide noise immunity and robustness. The inputs are activated by being pulled high, either
by connection to the SB-1000 hardwire interface power supply output or by connection to a customer
supplied signal. Activating the inputs requires at least 8 mA at a voltage between 10 and 26 volts, AC or
+DC, referenced to the SB-1000 hardwire interface power supply common. The common pins are internally
connected to chassis and earth ground. The inputs are deactivated by removing the connection to the power
or signal source.
The four primary outputs consist of optically isolated, solid state, single-pole/double-throw relays. These
relays may be used to supply an output signal by connection to a voltage source supplied by the customer.
Common
N/C
N/C
N/C
RPM Return
RPM Output
Common
FBSI
Relay Contact - NC
BOT Relay Contact - NC
BOT Relay Contact - NO
FBSI
Relay Contact - NO
BIP Relay Contact - NO
Common
BOT2 Relay Contact - NO
BOT2 Return
BOT2 Relay Contact - NC
FPI Input
SBC Input
SPB (Stop Balance) Input
Supply Output
N/C
BOT Return
FBSI Return
BIP Return
BIP Relay Contact - NC
Shell (Shield Gound)
Hardwire Interface Connector
Standard for all SB-1000 models
