Description
The Model 4950H is a programmable timer which controls two separate
relays to turn ON or OFF up to fifty-six times during a seven day period with a maximum of
eight events per day. Once a pattern of events has been programmed the Model 4950H will
operate on a continuous basis remembering the programming of the events, the time of day,
and the day of the week, even during a power failure. There are no batteries required to
keep the model 4950H clock running during power failures. The display is a bright 4 digit
LED type.
Specifications
| Operating Voltage |
12V DC, 12, 24, 115, and 230V AC 50/60 Hz. |
| Output Relays |
Two (2) SPDT Relays |
| Contact Rating |
20A SPDT, see PDF specifications for
details |
| Display |
4 digit 7 segment LED 0.5 inch high characters. |
| Clock Type |
24 hour (00:00 - 23:59) |
| Battery Backup |
Does not require batteries or power to sustain timing during
timing failure. power required only to operate relays and display. |
| Clock Accuracy |
+/- 2 minutes per month at 25 deg. C. |
| Programmable Events Per Day |
Eight (8). |
| Programmable Events Per Week |
Fifty-Six (56) |
| Transient Protection |
Protected by silicon transient suppressors which respond to
transients with 1 x 10 -12 seconds to a peak pulse power dissipation of 1500 watts, with
transient surge currents to 200 amperes for duration of up to 1/120 second at 25 deg. C. |
| Dielectric Strength |
1500V RMS. between all terminals to PC board and between all
relay contacts and input voltage. |
| Keypad |
0 - 9, #, * membrane tactile type. |
| Keypad Commands |
Enter time of day - Enter day of week - Enter event timing
data - Scroll daily programmed events - Clear all memory. |
| Construction |
Metal enclosure with external keypad and
knockout holes to facilitate wiring. Front panel cover plate removes
to expose wiring terminals |
4950H Specifications , click to view, right
click - Save As ... to download
4950H User Handbook , click to view, right
click - Save As ... to download
Ordering Information
| Model |
Operating Voltage |
| 4950H |
-12VDC
-12VAC
-24VAC
-115VAC
-230VAC |
|
