Nor-Lake Enviro-Control IOM - Manual (Page 16)

KE2 EvaporatorEfficiency
Installation Instructions
Controller
Input Voltage: 120V or 208 - 240V
Ambient Temp: -40° to 140°F
Operating Temp: -40° to 140°F
Display: 4-digit alphanumeric LED
IP Rating: IP65
Inputs:
(4) temperature sensors (KE2 SKU 20200)
(1) pressure transducer (KE2 SKU 20204)
Valve Types:
unipolar and bipolar stepper motors (12V)
(Beacon® is 21V)
Relays:
20A resistive (defrost)
10A inductive (evaporator fan)
(2) 3A inductive rated cycles
Digital Input 1 & 2:
door contact, use 2nd air temp setpoint, disabled,
system off, external alarm notification
Digital Input 3
door contact, use 2nd air temp setpoint, dis-
abled, system off, external alarm notification,
lights, camera
Communication: Standard TCP/IP
Pressure Transducer
Pressure Range: 0 to 150 psia
Proof Pressure: 450 psi
Burst Pressure: 1500 psi
Operating Temp: -40° to 275°F
Temperature Sensor
Sensor Specs: -60° to 150°F moisture resistant package
Communication
The KE2 Evap uses standard TCP/IP communication. The con-
troller is equipped with an RJ-45 female connector to connect
to Ethernet cable.
To communicate with the controller, the user will use a web
browser to see the KE2 MasterView. The information is stored
on the controller, so special software is not required.
A standard Ethernet cable should be used between the periph-
eral device and the controller. One end is connected to the
controller, and the other to the Ethernet port on the PC or Mas-
terView. The Ethernet port will look similar to a telephone jack.
The difference is the Ethernet port is larger with 8 wires instead
of 6.
In installations where multiple evaporators are piped to a single
condenser, networking the controllers is required. This prevents
damage to the system by synchronizing the defrost cycles. Net-
worked controllers have an additional safety layer to protect the
system. When networked, the controllers share information,
such as air temperature, to allow a controller in alarm mode to
continue to provide refrigeration until the system is serviced.
When networking multiple controllers an ethernet switch or
router is required. KE2 Network Router is available in a 4-port
and KE2 Switch in an 8-port model. The KE2 Router includes
wireless access. The 8-port switch should be used for larger
networks. Multiple switches can be ganged together to cre-
ate additional ports for the network. When necessary, the lo-
cal Network Adminstrator should be contacted to facilitate the
network installation.
Table 4 - Defrost Defaults
Setpoint Electric Air Hot Gas
Defost Fan State: Off On Off
Defrost Termination
Temperature
Setpoint:
50 40 50
Maximum Defrost
Time
30 45 15
Electric Defrost
Mode:
Pulse Permanent Permanent
Table 5 - Ethernet Specifications Summary
Specifications Ethernet -
Unshielded Twisted Pair
(UTP)
Topology star
Network Friendly YES
Maximum Cable Length 330 feet (copper)
Maximum Data Rate 1,000 mbs
Native Internet YES
Supported Devices thousands
Response Time milliseconds
For additional information on Ethernet Cable, consult IEEE 802.
16 01/13 Rev. A 151627
Enviro-Control™