KROHNE Summit 8800 Vol 1 User Manual
Page 137
137
www.krohne.com
08/2013 - MA SUMMIT 8800 Vol1 R02 en
SUMMIT 8800
APPENDIX 3: TECHNICAL DATA
15
Redundancy
Master/Slave computer
Health based switching
Full redundancy between two flow computers
Duty-standby system based on health indicator
Healthiest computer duty
Other flow computer Hot standby
Two independent heartbeat/ healthy channels
I/O Boards
Type board:
Digital 1
Digital 2 Analog Switch
HART transmitter loop
Up to 3 transmitters (if multi-
dropped)
Up to 4 variables per transmitter
For temperature, (differential)
pressure, meters
2
2
1
-
Direct RTD Input
4 wire PT100 temperature input
-20°C ... +100°C (10 ... 210°F), 1
mA energise
1
-
1
-
Analog Inputs
4-20 mA, 100 ohm, 20 bit resolu-
tion, accuracy 0.01 % FS @ 20 °C
Selectable: either 1x 4-20 mA
output or 1x Digital Output
-
-
3/4*
-
Digital Inputs for Switch
/ Valve / Status
3 of which can be:
Optically isolated, 24 Vdc, 25 mA
5
6
5 / 4*
6
Pulse Counting/ Fre-
quency Inputs
DC to 15 kHz, optically isolated
ISO 6551 or API Chapter 5.5 Level
A
Turbine, density, status or detec-
tor switch
max, Input voltage + 24 Vdc or 1.2
Vdc
(3)
(3)
(3)
(3)
Digital / Switch / Valve /
Alarm / Pulse Outputs
Open Collector, 30 V max, 20 mA,
100 mW
Frequency 0, 2, 5, 10, 25, 50 Hz @
50% duty cycle
5
6
5 / 4*
6
Analog Outputs
4-20 mA, loop max. 750 W, 26 mA
16 bit max error 0.15%
For telemetry and PID control
2
4
2 / 3*
-
Selectable Digital Input
or Output
Can be individually selected to be
input or output
Same specifications as above
-
-
-
6
Serial Communication
Connection
RS232/RS485
Speeds up to 38400 baud, soft-
ware handshake
Modbus Master/Slave communi-
cation
For meters (ultrasonic, Coriolis),
GC and analysers
1
1
1
1