AK-PC
420
Manual RS8EL402 © Danfoss 03-2010
17
Data
Ordering
Type
Function
Ordering
AK-PC 420
Capacity controller for dry cooler
084B8008
EKA 163B
Display unit
084B8574
EKA 164B
Display unit with operation buttons
084B8575
Cable for display unit 2 m, 1 pcs.
084B7298
Cable for display unit 6 m, 1 pcs.
084B7299
EKA 174
Data communication module, LON RS
485 (with galvanic separation)
084B7124
EKA 178B
Data communication module, MOD-bus
(with galvanic separation)
084B8571
Danf
os
s
84B2330.11
Display type EKA 163 / EKA 164
AK-PC 420
Montage
Supply voltage
24 V a.c. +/-15% 50/60 Hz, 5 VA
Input signal
1 pcs. pressure transmitter type AKS 32R
3 pcs. temperature sensor input for PT 1000
ohm/0°C or PTC 1000 ohm/25°C
External reference signal: 0-10 V d.c.
Digital input from
contact function.
1 pcs. for Start/stop of regulation
8 pcs. for monitoring of safety circuits
3 pcs. for alarm function
1 pcs. for start of heat recovery
Relay output for fans 8 pcs. SPST
AC-1: 3 A (ohmic)
AC-15: 2 A (inductive)
Relay output for twin
pump
2 pcs. SPST
Relay output heat
recovery
1 pcs. SPST
Alarm relay
1 pcs. SPDT
AC-1: 6 A (ohmic)
AC-15: 3 (inductive)
Voltage output
0-10 V d.c.
Display outputs
EKA 163
Pc display
EKA 164
Operation, S7 display
Data communication Possible to connect a data communication
module
Environments
0 - 55°C, during operation
-40 - 70°C, during transport
20 - 80% Rh, not condensing
No shock influence / vibrations
Enclosure
IP 20
Weight
0.4 kg
Mounting
DIN rail or on wall
Terminals
max. 2.5 mm
2
multicore
Approvals
EU Low voltage Directive and EMC demands re
CE-marking complied with.
LVD-tested acc. to EN 60730-1 and EN 60730-2-9
EMC-tested acc. to EN61000-6-2 and 3
Pressure transmitter / temperature sensor
Please refer to catalogue RK0YG...
Installation considerations
Accidental damage, poor installation, or site conditions, can give
rise to malfunctions of the control system, and ultimately lead to a
plant breakdown.
Every possible safeguard is incorporated into our products to
prevent this. However, a wrong installation, for example, could still
present problems. Electronic controls are no substitute for normal,
good engineering practice.
Danfoss will not be responsible for any goods, or plant compo-
nents, damaged as a result of the above defects. It is the installer's
responsibility to check the installation thoroughly, and to fit the
necessary safety devices.
Special reference is made to the necessity of signals to the
controller when the compressor is stopped and to the need of
liquid receivers before the compressors.
Your local Danfoss agent will be pleased to assist with further
advice, etc.
Only for front mounting (IP 40)
Only connection via plugs
