E5AK/E5CK/E5EK
E5AK/E5CK/E5EK
98
OPTION BOARD RATINGS AND CHARACTERISTICS
Event inputs
Contact input:
ON: 1 k
Ω
max., OFF: 100 k
Ω
min.
No-contact input:
ON: residual voltage 1.5 V max., OFF: leakage current 0.1 mA max.
Communications
Interface
RS-232C and RS-485; RS-422 for E5AK and E5EK only
Transmission
method
Half-duplex
Synchronization
method
Start-stop synchronization (asynchronous method)
Baud rate
1.2/2.4/4.8/9.6/19.2 kbps
Transfer output
4 to 20 mA:
Permissible load impedance: E5AK and E5EK = 600
Ω
max.
E5CK = 500
Ω
max.
Resolution:
E5AK and E5EK = approx. 2,600 steps
E5CK = approx. 2,600 steps
RS-232C Peer-to-peer only; maximum cable length = 15 m (49.2 feet)
RS-422 and RS-485 32 controller maximum to host computer; maximum cable length = 500 m
(1640 feet)
CURRENT TRANSFORMER RATINGS
Part number
E54-CT1
E54-CT3
Max. continuous heater current
50 amps
120 amps
Dielectric strength
1,000 VAC (for 1 min)
Vibration resistance
50 Hz, 98 m/s
2
(10G)
Weight
Approx. 11.5 g
Approx. 50 g
Accessories
––
Armature: 2; Plug: 2
HEATER BURNOUT ALARM
Max. heater current
Single-phase 50 A VAC (See Note 1.)
Heater current value display accuracy
±
5% FS
±
1 digit max.
Heater burnout alarm setting range
0.1 to 49.9 A (in units of 0.1 A) (See Note 2.)
Min. detection ON time
190 ms (See Note 3.)
Note: 1. Use the K2CU-F
A-
GS (with gate input terminals) for the detection of three-phase heater burnout.
2. The heater burnout alarm is always OFF if the alarm is set to 0.0 A and always ON if the alarm is set to 50.0 A.
3. No heater burnout detection or heater current value measurement is possible if the control output (heat) is ON for less than
190 ms.
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