Renishaw RGH20, Руководство по установке, Страница: 15 / 19

SECTION 2 - RGH20F/REF system
(continued)
General specifications
Power supply 5 V - 5% +10% 200 mA maximum (system)
The interface will be fully active <300 ms after power is applied.
The interface and readhead are protected from reverse voltage
and over voltage of up to 12 V.
NOTE: Current consumption figures refer to
unterminated interfaces.
For digital outputs a further 35 mA per channel pair (eg A+, A-)
will be drawn when terminated with 120

.
For analogue outputs a further 20 mA will be drawn when
terminated with 120

.
Powered from a 5 V dc supply complying with the
requirements for SELV of standard EN (IEC) 60950.
RGH20F UHV
(readhead only)
50 mA
Ripple 200 m Vpp @ frequency up to 500 kHz
Bake-out temperature 120 °C (RGH20F UHV only)
Sealing
(readhead)
IP40
Acceleration
(readhead)
Operating 500 m/s
2
BS EN 60068-2-7:1993
(IEC 68-2-7:1983)
Shock
(readhead)
Non-operating 1000 m/s
2
, 6 ms, ½ sine BS EN 60068-2-27:1993
(IEC 68-2-27:1987)
Vibration
(readhead)
Operating 100 m/s
2
, 55 to 2000 Hz BS EN 60068-2-6:1996
(IEC 68-2-6:1995)
Mass Readhead 9 g
Interface 100 g
Cable (standard) 34 g/m
(UHV) 23 g/m
Readhead cable Standard Double shielded, outside diameter 4.2 ±0.2 mm.
Flex life >20 x 10
6
cycles at 20 mm bend radius.
UHV Single tinned copper braided shield over PTFE
insulated cores.
NOTE: Standard 15 pin D type connector fitted is
not vacuum compatible.
The RGH20F readheads have been designed to the relevant EMC standards, but must be
correctly integrated to achieve EMC compliance. In particular, attention to shielding and
earthing arrangements is essential.
Output signals
15 way D type socket
Pin Signal
Wire colours
from
readhead
15 way D type plug
5 V
0 V
A
B
C
–
Hall
–
Servo
V
X
V
MID
Sin monitor
Cos monitor
Inner
Outer
–
–
5 V
0 V
A+
A-
B+
B-
Z+/Q+
Z-/Q-
E+
E-
–
X
–
–
–
–
Outer
–
–
8
9
6
5
4
–
1
–
3
13
7
11
10
15
Case
14
2, 12
7, 8
2, 9
14
6
13
5
12
4
11
3
–
1
–
–
–
–
Case
10
15
Input
Output
Pin Signal Pin Signal
5 V
0 V
V
1
+
V
1
-
V
2
+
V
2
-
V
0
+/ V
q
+
V
0
-/ V
q
-
–
–
–
–
–
–
–
–
Outer
–
–
4, 5
12, 13
9
1
10
2
3
11
–
–
–
–
–
–
–
–
Case
8
6, 14, 15
Function
Power
Incremental
signals
Reference
mark /limit
Alarm
Ired servo
External set-up
V
MID
Sin monitor*
Cos monitor*
Shield
Do not connect
Not connected
Red
White
Green
Yellow
Blue
–
Pink
–
Brown
Interface
outputs
only
–
–
–
*
2.25 Vpp @ 100% signal amplitude centred on 1.65 V
Analogue input Analogue output Digital output