Instruction Manual REG 21
15
5.2.2 Electrical connections
WARNING!
The instrument is available in a number of different models. The
model is identifiable by the features described in section 4.2 and indicated on
the rating plate and on the second housing label. The model must be
identified before making any electrical connections.
WARNING!
RISK OF ELECTRICAL SHOCK! Do not attempt to make any
electrical connections unless the cables attached to both switching outputs
are at zero potential and the power supply has been switched off.
The instrument is operates with a floating ground
Set up the electrical connections as indicated on the housing label or in fig. 6.
Fig. 6 Pin assignment for terminal strip (from fig. 5):
a. standard unit with 24 V / 115 V-AC options;
b. 24 V-DC option;
c. with optically coupled transistor output (output 1)
5.2.3 Option light emitting diodes (LED)
Pin assignment for terminal for LED
1
– Cathode(-) LED A
2
– Cathode(-) LED B
3
– Cathode(-) LED C
4
– not connected
5
– common anode(+)
a.
b.
c.
analog
output
switching
output 2
switching
output 1
power
supply
230 V-AC
50...60 Hz
(standard)
transistor output 2 is
similarly run through
terminals 4 and 5.
Relay 1
Relay 2
2
1
5
4
3
