KB Electronics KBVF-48 - Manual (Page 19)

9.5 SIGNAL FOLLOWING CONNECTIONS – The
drive output will linearly follow the analog signal
input.
Models KBVF-27, 29
Wire the isolated* 0 – 5 Volt DC signal input pos-
itive lead (+) to Terminal “P2” and the negative
lead (–) to Terminal “P1”. The terminals are locat-
ed on the lower PC board. With external circuitry,
a 0 – 10 Volt DC analog signal can also be used.
See Figure 18.
*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 10.
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 recom-
mended that the SIVFR – Signal Isolator
and Run/Fault Relay (Part No. 9597) be
installed when using signal following.
Models KBVF-45, 48
The SIVFR is factory calibrated for 0 to ±5
Volt DC signal input. Wire the voltage (0 to
±2.5 thru 0 to ±25 Volt DC) or current (4 –
20 mA DC) signal input to Terminals “SIG1”
(+) and “COM1” (–) of Terminal Block TB1
on the SIVFR. For voltage following, be
sure Jumper J1 (on the SIVFR) is set to the
“VOLT” position (factory setting). For cur-
rent following, set Jumper J1 (on the
SIVFR) to the “CUR” position. See Figures
19 and 20. A jumper must be
installed between Terminals “0V”
and “FWD”, of Terminal Block
TB1, in order for the drive to
operate.
Application Note – In the Voltage
Following Mode, the input will
accept a “+” and “–“ input volt-
age, which will run the motor in
the forward and reverse direction.
Notes: 1. The MIN Trimpot on Models KBVF-45, 48 is not functional. Use the OFFSET Trimpot on
the SIVFR to offset the signal input, as described in Section 13.2.1, on page 23. 2. Do not use the
MAX Trimpot on Models KBVF-45, 48. Use the MAX Trimpot on the SIVFR to scale the signal input,
as described in Section 13.2.2.
19
REV -5V
TB
1
+5V 0V FWD SIG1 COM1
Jumper
0 to ±25
Volts DC
+ V -
CU
R
VO
LT
J1
SIVF
TERMINAL
BLOCK
FIGURE 19 – MODELS KBVF-45, 48
VOLTAGE FOLLOWING SIGNAL INPUT CONNECTION
(0 to ± 2.5 THRU 0 to ± 25 VOLTS DC)
(JUMPER J1 INSTALLED IN “VOLT” POSITION)
REV -5V
TB
1
+5V 0V FWD SIG1 COM1
Jumper
+ -
4 - 20 mA DC
CU
R
VO
LT
J1
SIVF
TERMINAL
BLOCK
FIGURE 20 – MODELS KBVF-45, 48
CURRENT FOLLOWING SIGNAL INPUT CONNECTION
(JUMPER J1 INSTALLED IN “CUR” POSITION)
FIGURE 18 – MODELS KBVF-27, 29
VOLTAGE FOLLOWING SIGNAL INPUT CONNECTION
0 – 5 Volts DC (Isolated) 0 – 10 Volts DC (Isolated)
P1 P2 P3
0 - 5
Volts DC
+
-
V
P1 P2 P3
0 - 10
Volts DC
V
+
-
10k
10k
FIGURE 21 – MANUAL START SWITCH CONNECTION
Jumper Removed
Connector Installed for
Manual Start Switch
CON1
A/M
Manual Start Switch
(Momentary Contacts)
(Push to Run)
White
Black
CON1