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FM/1 digi 20
One Channel Electronic Time Switch
The FM/1 digi 20 is a compact electronic 24 hour/
7 day time switch module, with heavy duty relay contacts
for switching low or line voltage loads. Applicable for
time of day control of pumps, fans, heaters, HVAC con-
trol circuits, lighting, machinery and many other types of
commercial, industrial, and agricultural equipment.
The FM/1 digi 20 model features large keys with
unique "circular programming" for easy programming, a
large LCD display and capacitor backup to retain pro-
gram memory during power outages.
TECHNICAL DATA:
Channels: 1
Programs: 20
Holiday Program: No
Daylight time changeover: Manual
Manual 3 way override: On-Auto-Off
Shortest switching time: 1 minute
Reserve carryover: 100 hrs.
Input voltage models available:
24VAC/DC; 120VAC; 208/240VAC
Switching output: SPDT relay
Switch ratings:
16A res. @ 277VAC
1000W Tungsten @ 250VAC; 500W @ 125VAC
SPECIFICATIONS:
Input draw: 4VA
Input frequency: 50 or 60Hz
Wiring connections: 1/4" quick connects
Ambient temperature: –20°F to 140°F (–28°C to 60°C)
UL and Canadian UL recognized: File E83486
INSTALLATION & WIRING:
Note: Although the FM models contain some degree of spike and elec-
trical noise protection, as with all electronic devices, these units can be
affected by electrical noise. Therefore, it is recommended that they be
powered from a voltage source that has no switching devices or inductive
loads connected.
1. Check the input and output ratings marked on the unit to make sure
this product is suitable for your supply voltage, load, and application.
2. Disconnect supply power prior to installation to prevent electrical
shock.
3. Install in accordance with all applicable National and Local electrical
code requirements.
MOUNTING OPTIONS:
The standard FM/1 models may be surface mounted inside a panel or
flush mounted with MK-FM mounting kit, available from Grasslin. Indoor
NEMA 1, and outdoor NEMA 3R enclosures are available for stand-alone
mounting. Consult Grasslin catalog or price sheet for various options.
A mounting base (MB-FMPC) is available for printed circuit board
mounting. A clear plastic dust cover (DC-FM) is also available.
Models are also available with screw terminals and DIN rail mounting,
or for flush mounting with housing and clear cover. (Digi 20A & Digi 20E)
Dimensions
Terminal Connections
TIME
SWITCH
M
COM
NO
NC
1
2
3
4
5
LOAD
POWER
TIMER INTERNAL WIRING
FIELD WIRING
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Related Manuals for Grasslin FM/1 digi 20
Summary of Contents for Grasslin FM/1 digi 20
- Page 1 FM/1 digi 20 One Channel Electronic Time Switch The FM/1 digi 20 is a compact electronic 24 hour/ 7 day time switch module, with heavy duty relay contacts for switching low or line voltage loads. Applicable for time of day control of pumps, fans, heaters, HVAC con- trol circuits, lighting, machinery and many other types of commercial, industrial, and agricultural equipment.
- Page 2 KEYPAD DESCRIPTION SELECTING AM/PM OR MILITARY TIME After pressing reset, the display may Setting the Time/Automatic Run Mode show AM (right). The numbered day Prog. Program Mode symbols will be flashing on and off. Res.* Reset: Clears all programs and time If the display does not show AM, it is Select ON or OFF in Prog.
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Page 3: Changing A Program
Program 2 (OFF at 5:00PM Monday thru Friday) CHANGING A PROGRAM Press key twice OFF symbol appears Select the program to be changed with the Prog. key. A new set of days may be selected with the Day key just as in initial programming. Press h key to 05PM Hour and minute can be changed with the h and m keys.
Need help?
Do you have a question about the FM/1 digi 20 and is the answer not in the manual?
Questions and answers
eltunt a kijelzorol minden, mit tegyek?
If everything disappears from the display on a Grasslin FM/1 digi 20, it may indicate that electrical noise or voltage transients have disrupted the microprocessor, causing a loss of program information. In this case, you should call 1-800-272-1115 and request a no-charge "Snubber Filter" to place across the input to the timer, which may solve the issue.
This answer is automatically generated