E16521D-Manual_EN_Rev12 2021_JAN_14
Page 23 of 26
6
Wiring of E16521D
6.1
Function Diagram and Terminals of E16521D
Terminal
Nos.
13
12
-
+
Analog output 0/4…20 mA
Power supply
20…265 Vuc
18…40 Vuc for model E16521D.2U1
1
2
dc ac
+ L1
- N
7
6
10
Inductive loads require
external spark extinguishing.
Relays shown in their
de-energized position.
Rating see specifications
of relay outputs.
5
4
High = Starter active (12…24 V)
Reference to Starter/Reset input
3
Positive edge = Reset of Latched Alarms
(12…24 V)
8
Safety
Output OR1
Measurement
and
signal
processing
D/A-converter
and analog
output
Display and keys
11
9
Alarm
Output OR2
S
e
n
so
r co
n
n
e
ctio
n
s
se
e
f
o
llo
wi
n
g
p
ag
e
17
18
14
Push/Pull Pulse Output
Reference
21
22
Input section
with
sensor monitoring
Input Reset
Input Starter
25
26
Alarm
Output OR4
PhotoMOS relays, shown
in their de-energized position.
23
24
Alarm
Output OR3
