Datasheet

Digital Temperature Controllers E5CN/E5CN-U 9
■ Heater Burnout Alarms and SSR
Failure Detection Alarms
(E5CN Models with Heater Burnout and SSR Failure Detection
Alarms)
Note: 1. If the ON time of control output 1 is less than 190 ms, heater
burnout detection and the heater current will not be
measured.
2. If the OFF time of control output 2 is less than 190 ms, SSR
failure detection and the heater current will not be mea-
sured.
■ Electrical Life Expectancy
Curve for Relays
(Reference Values)
Note: Do not connect a DC load to a Controller with a Long-life Relay
Output.
Maximum
heater current
50 A AC
Input current
indication
accuracy
±5% FS ±1 digit max.
Heater burnout
alarm setting
range
0.1 to 49.9 A (in units of 0.1 A)
0.0 A: Heater burnout/SSR failure alarm output
turned OFF.
50.0 A: Heater burnout/SSR failure alarm output
turned ON.
Minimum detection ON time: 190 ms (See note 1.)
SSR failure
detection
alarm setting
range
0.1 to 49.9 A (in units of 0.1 A)
0.0 A: Heater burnout/SSR failure alarm output
turned ON.
50.0 A: Heater burnout/SSR failure alarm output
turned OFF.
Minimum detection OFF time: 190 ms (See note 2.)
500
300
100
50
30
10
5
3
1
0123456
Switching current (A)
Life (
×
10
4
operations)
E5CN
250 VAC, 30 VDC
(resistive load)
cosφ = 1