Stulz C7000 - Presentation of the System

5 © STULZ GmbH – all rights reserved EN/06.2019/G57
C7000 INSTRUCTIONS FOR A/C UNITS
This manual is based on the software versions IOCV6.85 and ATV4.73.
The C7000 control system offers a maximum of
operating safety for industrial applications combined
with two versions for the operator interface. The
C7000IOC takes charge of the control in itself and
the optional C7000 Advanced serves as a comforta-
ble operator interface.
Each A/C unit has its own controller while all control-
lers can be linked together in a bus system.
Beyond the basic cooling functions, the C7000 con-
trol system provides some interesting features like an
intelligent management of high/low pressure-alarms,
a proportional fan speed control which opens a wide
spectrum of applications and time-based functions
like:
- week timer
- unit sequencing within definable unit groups
A watchdog on the IOC board monitors the CPU
function and produces a restart, as soon as for 0,5
seconds no CPU activity could be detected.
The core of the C7000 control system is the C7000
I/O controller on which up to 4 EAIO/EDIO for
additional in- and outputs can be perpendicularly
plugged.
The C7000 control systems manages 3 busses:
1. RS485 IO-bus for the communication among the
A/C units
2. RS485 BMS-bus for the communication with a
building management system
3. RS485 component bus (e.g. for EVD {driver mod-
ule for expansion valve}, µPC )
For service purposes like software download and
control via laptop a RS232 interface is located on the
I/O controller the same as on the C7000 Advanced.
1. Presentation of the system
IICBus: internal data bus in the IO controller
EAIO: Extension board for analog in- and outputs
EDIO: Extension board for digital in- and outputs
EBUS: Extension board for a RS485 bus
Analog (A) and digital (D) in- and outputs
AIN AOUT DIN DOUT
IOC 4 4 11 7
EAIO 4 4 / /
EDIO / / 8 6
Maximum equipment
IOC + 4 EAIO 20 20 11 7
IOC + 4 EDIO 4 4 43 31
Interfaces
IOC
1  RS485 IO bus, terminals
4  IICBus, SUBD15
EBUS connection SUBD15
RS232, SUBD9
EAIO IICBus, SUBD15
EDIO IICBus, SUBD15
EBUS
I/O controller connection SUBD15
RS485 BMS-bus, terminals
RS485 component bus, terminals
C7000AT
2  RS485 IO-bus + BMS, terminals
2  RS232 BMS + service, SUBD9