FLM‑420/4‑CON Conventional Interface Modules 4‑wire LSN

FLM‑420/4‑CON Conventional Interface Modules 4‑wire LSN
Interface module conventional use, surf.
CTN FLM-420/4-CON-S
Product No. F.01U.012.534

FLM‑420/4‑CON Conventional Interface Modules 4‑wire LSN
Interface module conventional use, rail
CTN FLM-420/4-CON-D
Product No. F.01U.012.535
LSN input voltage | 15 V DC to 33 V DC (min. to max.) |
Max. current consumption from LSN | 8.5 mA |
Line voltage | 21 to 22 V DC (21.5 V DC typ. ±0.5 V DC)) |
Max. current supply 2-wire sensor | 6 mA |
Max. line current | 80 mA per line (±10% at 25 °C) |
Max. line resistance | 50 Ω per line (max. 2 x 25 Ω) |
Galvanic isolation from LSN | Yes |
Voltage | 24 to 30 V DC |
Residual ripple | < 150 mV |
Voltage | 23.5 V DC to 30 V DC(rated voltage 24 V DC) |
Residual ripple | < 300 mV |
Max. current (supply to 4‑wire detector) | 200 mA per output (can be switched in parallel) |
With calibration value | 2.2 kΩ |
Without calibration value | 2.2 kΩ / 3.9 kΩ |
Max. current consumption (PWR IN) | 1 x 2.2kΩ*, 2 x 2.2kΩ*, 1 x 3.9kΩ*, 2 x 3.9kΩ* |
Standby | 36 mA, 50 mA, 31 mA, 40 mA |
Lines open or short | 25 mA, 28 mA, 25 mA, 28 mA |
1 device on alarm at the line (820 Ω alarm res.) | 69 mA, 112 mA, 65 mA, 103 mA |
Multiple devices on alarm at the line | 138 mA, 250 mA, 138 mA, 250 mA |
Safety buffer to consider.Only when 4-wire sensors are used and powered trough the power output (AUX 2+ 1/2 1+) of the FLM-420/4-CON. | Add the following figures one time only to the total power consumption for each power supply output: |

Surface mount box
CTN FLM-IFB126-S
Product No. F.01U.029.614
as retainer for the interface modules series 420 type DIN rail (-D) or spare housing for type surface-mount (-S)