KB Electronics KBVF-23P - Manual (Page 8)

1.8 Voltage Following – An isolated* 0 – 5 Volt DC analog signal input can be used to control
motor speed in lieu of the Main Speed Potentiometer. The drive output will linearly follow the
analog signal input. Connect the signal input positive lead (+) to Terminal “P2” and the nega-
tive lead (–) to Terminal “P1”. See Section 9.5, on page 32.
*If a non-isolated signal is used, install the SIVFR — Signal Isolator (Part No. 9597). The SIVFR
accepts voltage (0 to ±2.5 thru 0 to ±25 Volts DC) or current (4 – 20 mA DC) signal inputs.
See Section 3.5, on page 13.
Note: For signal following operation, the Minimum Speed Trimpot (MIN) must be set fully
counterclockwise.
WARNING! The signal input must be isolated from the AC line. Earth grounding
signal wiring will damage the drive and void the warranty. It is recommended that
the SIVFR — Signal Isolator and Run/Fault Relay (Part No. 9597) be installed when
using signal following.
2 SAFETY WARNING
Definition of Safety Warning Symbols
Electrical Hazard Warning Symbol – Failure to observe this warning could result in electrical
shock or electrocution.
Operational Hazard Warning Symbol – Failure to observe this warning could result in
serious injury or death.
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