FEP630, FEH630 ELECTROMAGNETIC FLOWMETER  |  OI/FEP630/FEH630-EN REV. D  39 
 
 
 
 
Digital output 41 / 42, 51 / 52 
Can be configured as pulse, frequency or binary output via on-
site software. 
G11597-02
A
16...30 V DC
B
R
B
U
CE
I
CE
R
B
U
CE
I
CE
41+
51+
IE
42-/
52-
41+
51+
IE
42-/
52-
R
B
R
B
012345
16...30 V DC
012345
R
B
 
A Digital output 41 / 42, 51 / 52 passive as a pulse or frequency output 
B Passive digital output 51 / 52 as binary output 
Figure 48:   (I = internal, E = external, R
B
 = load) 
 
Pulse / frequency output (passive) 
Terminals  41 / 42, 51 / 52
Output ‘closed’  0 V ≤ U
CEL
 ≤ 3 V
For f < 2.5 kHz: 2 mA < I
CEL
 < 30 mA
For f > 2.5 kHz: 10 mA < I
CEL
 < 30 mA
Output ‘open’  16 V ≤ U
CEH
 ≤ 30 V DC
0 mA ≤ I
CEH
 ≤ 0.2 mA
f
max
 10.5 kHz
Pulse width  0.1 to 2000 ms
 
Binary output (passive) 
Terminals  41 / 42, 51 / 52
Output ‘closed’  0 V ≤ U
CEL
 ≤ 3 V
2 mA ≤ I
CEL
 ≤ 30 mA
Output ‘open’  16 V ≤ U
CEH
 ≤ 30 V DC
0 mA ≤ I
CEH
 ≤ 0.2 mA
Switching function  Parameterization possible.
See Menu: Input/Output on page 88.
 
 
Note 
•  Terminals 42 / 52 have the same potential. Digital outputs 
DO 41 / 42 and DO 51 / 52 are not electrically isolated from 
each other. If an additional electrically isolated digital output 
is required, a corresponding plug-in module must be used. 
•  If you are using a mechanical counter, we recommend setting 
a pulse width of ≥ 30 ms and a maximum frequency of 
f
max
 ≤ 30 Hz. 
 
 
 
 
 
 
Current output V1 / V2, V3 / V4 (plug-in module) 
Up to two additional plug-in modules can be implemented via 
the ‘Passive current output (red)’ option module. 
 
G11897-02
A
B
V1+
IE
V2-
R
B
OC1
V3+
IE
V4-
R
B
OC2
 
A  Current output V1 / V2, passive  B Current output V3 / V4, passive 
Figure 49:  (I = internal, E = external, R
B
 = load) 
 
The plug-in module can be used in slot OC1 and OC2. 
 
G10323-02
0
0
100
200
300
400
500
600
5101520253035
RB [Ω]
Uq [V]
 
Permissible source voltage U
q
 for passive outputs in relation to load 
resistance R
B
 where Imax = 22 mA.  = Permissible range 
Figure 50:  Source voltage for passive outputs 
 
Passive current output 
Terminals  V1 / V2, V3 / V4
Output signal  4 to 20 mA
Load R
B
 250 Ω ≤ R
B
 ≤ 600 Ω
Source voltage U
q
* 13 V ≤ U
q
 ≤ 30 V
Measuring error  < 0.1 % of measured value
Resolution  0.4 µA per digit
*  The source voltage U
q
 is dependent of the load R
B
 and must be placed in 
an additional area.