Instrument Connection - Orbit Merret OM 502 User Manual

OM 502T
+ DMS supply
+ Sense
+ INPUT
-
INPUT
-
Sense
-
DMS supply
Shielding
!
Terminal block "Shielding" is designed for
connecting shielding of the supply lead (con-
nected only on the side of the instrument).
The "Shielding" and "GND" terminal blocks
MUST NOT be connected
Open collector
SSR
8 9 10 11 12 13
AO - I
AO - U
1 2 3 4 5 5 6 7
-
Open collector
OM 502DU
+
e
b
-
Shielding
!
Excitation value may be set by trimmer above
the terminal block no. 17

INSTRUMENT CONNECTION

!
Signal „SENSE" measures supply voltage on
tensionmeter upon 6-wire connection, for
4-wire connection join brackets B+C and F+G
directly on the instrument. Whenusing the
instrument in highly disturbing environemnt
we recommend using 4-wire connection.
RxD/L+
TxD/L-
GND
GND
14 15 16 17
OM 502LVDT
!
Grounding on terminal block 3 has to be
connected at all times
OM 502DC, PM, I, LX
+ INPUT U
+
INPUT I
-
GND
Shielding
-
GND
+
Excitation
-
5W
3W
INSTRUCTIONS FOR USE OM 502 | 7
3.