24
SBS System – SB-1000 Operation
The relay contacts are electrically isolated from all other circuits and are rated for 24 Volts DC or AC, 50
mA maximum. Inductive loads must be protected against flyback to 50VDC.
The three contacts of a single-pole/double-throw relay are referred to as “normally open”, “normally closed”
and “common”. The term “common” in this sense does not imply connection to power supply commons. The
term “return” is used below to indicate the common contact of the relay.
Input Pin Names and Functions
Pin# Name
Description
18 SBC
Start Balance Command- Momentarily activated to initiate an automatic balance operation.
The rising edge of this signal starts the operation.
19 SPB
Stop Balance Command- When active, this input stops an automatic balance operation in
progress and inhibits the start of an automatic balance operation from the hardwire interface.
AUTO button is still functional on front panel.
17 FPI
Front Panel Inhibit- When active, key operator actions at the front panel keypad are
disallowed. The MENU, MAN., and the AUTO Button are disabled. Still enabled are the
Power button and the Cancel button, which can be used to stop an automatic balance
operation. Access to the SHOW-ALL button and System Status screen are a llowed.
Output Pin Names and Functions
Pin# Name
Description
22
10
9
BOT-R,
BOT-NO
BOT-NC
Balance Out of Tolerance: Return, normally open, and normally closed contacts. This
relay is energized when the sensed vibration level exceeds the operator defined
Tolerance.
15
14
16
BOT2-R
BOT2-NO
BOT2-NC
Balance Out of Tolerance Two: Return, normally open, and normally closed contacts.
This relay is energized when the sensed vibration level exceeds the operator defined
Critical Tolerance, or when the spindle RPM exceeds the operator defined Critical RPM.
24
12
25
BIP-R
BIP-NO
BIP-NC
Balance In Progress: Return, Normally Open, and Normally Closed contacts. This relay
is energized while an automatic balance operation is in progress.
23
11
8
/FBSI-R
/FBSI-NO
/FBSI-NC
Failed Balance/ System Inoperative: Return, normally open, and normally closed
contacts. This relay is energized after a successful Power On Self-Test, when the power
is disconnected, or when the control is in stand-by. It is de-energized if a fault condition
arises.
6
5
RPM
RPM-R
This relay closes once per revolution for a minimum of 1ms. This is a buffered output of
the RPM signal generated by the balancer. It is not available if the RPM has been
entered manually.
