
2
4
6
Name: Basis
KEB COMBIVERT F4-F
17.09.98
Functional Description
Analog In- and Outputs
Chapter
Section
Page
Date
©
KEB Antriebstechnik, 1998
All Rights reserved
12
13
14
15
16
17
CRF
COM REF1 REF1 REF2 REF2
+
–
+
–
Control terminal strip X2
Terminal Designa-
Function
No.
tion
12
CRF
+10 V reference voltage
+10V (+/- 3%) ; max. 4 mA
13
COM
Earth for analog inputs/outputs
14
REF 1 +
Differential voltage input
Analog setpoint setting
rpm / Resolution: 12 Bit
15
REF 1 –
Ri = 24 k
Ω /
40 k
Ω
scan time: 2ms
16
REF 2 +
At fast setpoint input and
Programmable analog input
torque control: 128
µ
s
17
REF 2 –
(see chapter 6.5.18)
Typical circuits
1. Setpoint setting:
External differential voltage
without
internal reference potential.
Internal resistance Ri = 40 k
Ω
source of
external
differential
votlage
source of
external
differential
voltage *
)
Fig. 6.2.2
Connection
without
internal reference potential
*
)
also refer to parameter
AN.13 in Chapter 6.4