SECTION 2 - RGH20F/REF system
(continued)
REF installation drawing
Dimensions in mm
127
19.2
Set-up LED
Calibr
ate b
utton
Input
15 w
a
y D type
s
o
cke
t
Max.
scre
w siz
e M4
114
142
100
20
33.3
16.2
41
12
Output
15 w
a
y D type
plug
Optional mounting br
ac
k
ets
(A-9539-2018)
NO
TE:
Remo
v
e
loc
king posts and
discard w
ashers when installing
optional br
ac
k
ets
.
Tighten loc
king posts to 0.35 Nm
CAL
/A
GC LED
RGH20F
REF interface
Customer
electronics
Extension cable
Inner shield
(except UHV)
Outer shield
Output
signals
0 V
0 V power
5 V
Pin 15
Electrical connections
Grounding and shielding
# Only required on alarm channel E for fail safe operation.
Standard RS422A line receiver circuitry.
Recommended signal termination
Customer
electronics
0 V
1k
Interface
A B Z Q E+
Cable Z
0
= 120R
1k
#
#
120R
5 V
A B Z Q E-
Analogue output,
REF0000 only
V
q
V
0
V
1
V
2
+
V
q
V
0
V
1
V
2
-
120R
Digital outputs
20
50
100
Maximum cable length (m)
Receiver clock frequency (MHz)
25
20
Maximum cable length:
Readhead to interface 5 m
Interface to controller
IMPORTANT:
The outer shield should be connected to the machine earth (Field Ground). The inner shield
should be connected to 0 V at customer electronics. Care should be taken to ensure that the inner and outer
shields are insulated from each other. If the inner and outer shields are connected together, this will cause a
short between 0 V and earth, which could cause electrical noise issues.
Analogue
NO
TE:
F
or installation details see the Interf
ace mounting br
ac
k
et installation guide (M-9539-2012)