Fail-safe element
integrated fuse
Adjusted to the corresponding rated current IN
• I
N
: 1A (CL2) fail-safe I
N
: 1A
• I
N
: 2A (CL2) fail-safe I
N
: 2A
• I
N
: 3A fail-safe I
N
: 3.15A
• I
N
: 3A-CL2) fail-safe I
N
: 4A
• I
N
: 4A fail-safe I
N
: 4A
• I
N
: 4A-CL2 fail-safe I
N
: 4A
• I
N
: 6A fail-safe I
N
: 6.3A
• I
N
: 8A fail-safe I
N
: 8A
• I
N
: 10A fail-safe I
N
: 10A
Low voltage monitoring
of operating voltage
OFF at typically U
B
< 16.0 V
ON at typically U
B
> 19.0 V
Hysteresis typically 2 V with automatic OFF and ON operation
Disconnection of the load circuit • manually on the device with the ON/OFF momentary switch
• after an overload / short circuit disconnection with storage (no automatic reset)
• temporarily at undervoltage
• at no operating voltage
Switching on the load circuit
- Momentary switch ON/OFF
- Apply operating voltage
Unit can only be switched on when operating voltage was applied
The device re-starts with the last stored condition.
Reset function
A blocked load output (blocked by overload / short circuit) can be reset or switched
on manually by the momentary ON/OFF switch (LED button).
Free-wheeling circuit external free-wheeling circuit at inductive load (rating according to load) is recommended.
Parallel connection
of several load outputs
not permitted
Capacitive loads
(Depending on: cable attenuation,
power supply used, load current
and current rating)
at I
N
: 1A DC24V up to 5,000µF
at I
N
: 2A, 3A DC24V up to 10,000µF
at I
N
: 4A DC24V up to 12,000µF
at I
N
: > 6A DC24V up to 20,000µF
ON delay
- with power ON
- when switching on via ON/OFF
momentary switch
- after an undervoltage
channel 1: typically 100ms (1694-PM)
channel 2: typically 200ms (1694-PM)
channel 1: typically 5 ms
channel 2: typically 100 ms
channel 1: typically 5 ms
channel 2: typically 5 ms
Publication 1694-IN002D-EN-E - June 2020 DIR 10005220601 (Version 03)
User Manual: Bulletin 1694 Electronic circuit protection for 24V DC
3
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