Carel EVD Evolution Twin - Page 8

ENG
“EVD Evolution TWIN” +0300006EN - rel. 2.6 - 31.01.2019
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USB/RS485 converter (code CVSTDUMOR0)
The converter is used to connect the conguration computer and the EVD
evolution twin controllers, for RS485/Modbus ® models only.
Fig. 1.c
Ultracap module (P/N EVD0000UC0)
The module, mounted on DIN rail, guarantees temporary power to the
driver in the event of power failures, for enough time to immediately close
the connected electronic valves (one or two). It avoids the need to install a
solenoid valve. The module is made using Ultracap storage capacitors, which
ensure reliability in terms of much longer component life than a module
made with lead batteries. In just 4 minutes the module is ready to power two
Carel valves again (or 5 minutes for pairs or other brand valves).
Fig. 1.d
Valve cable E2VCABS*00 (IP67)
Shielded cable with built-in connector for connection to the valve motor. The
connector code E2VCON0000 (IP65) can also be purchased on its own, to be
wired.
Fig. 1.e
Float level sensor (P/N LSR0013000)
The level sensor measures the quantity of refrigerant in the heat exchanger.
This is used when controlling the valve based on the liquid level in the ooded
evaporator or condenser. Available with threaded or anged connector.
Fig. 1.f
Starting from software revision 5.0 and higher, new functions have been
introduced:
• management of new refrigerants;
• valve position in standby settable by parameter;
• operation as EVD Evolution with single driver: the driver controls one
expansion valve only (valve A), however it acquires new functions available
using probes S3 and S4:
1. electronic valve control in a refrigerant circuit with BLDC compressor,
controlled by CAREL Power+ speed driver (with inverter);
2. superheat control with two temperature probes;
3. auxiliary control functions:
- backup probes S3 and S4;
- subcooling measurement;
- high condensing temperature protection (HiTcond);
- modulating thermostat;
- subcooling measurement;
- reverse high condensing temperature protection;
- possibility to manage CO
2
(R744) cascade systems, setting the
refrigerant for the primary and secondary circuit.
New functions have been introduced with software revision 5.4 and higher:
• programmable control, both superheat and special, and programmable
positioner: these functions exploit CAREL’s technology and know-how in
terms of control logic;
• custom refrigerant selection;
• control with level sensor for ooded evaporator;
• control with level sensor for ooded condenser.
From the software revision following the 7.2-7.3 new features have been
introduced, including:
• battery charge delay;
• external signal 0 ... 5 V (for programmable positioner).
Series of accessories for EVD evolution twin
Display (code EVDIS00**0)
Easily applicable and removable at any time from the front panel of the
controller, during normal operation displays all the signicant variables for
system A and B, the status of the relay outputs and recognises the activation
of the protection functions and alarms. During commissioning, it guides the
installer in setting the parameters required to start the installations and, once
completed, can copy the parameters to other EVD evolution twin controllers.
The models dier in the rst settable language, the second language for
all models is English. EVDIS00**0 can be used to congure and monitor all
the control parameters for both drivers, accessible via password at a service
(installer) and manufacturer level.
Fig. 1.a
USB/tLAN converter (code EVDCNV00E0)
The USB-tLAN converter is connected, once the LED board cover has been
removed, to the service serial port underneath. Fitted with cables and
connectors, it can connect EVD evolution twin directly to a computer, which,
using the VPM program, can congure and program the controller. VPM can
also be used to update the controller and display rmware. See the appendix.
Fig. 1.b