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15
GF 9950-10 Six Channel Transmitter
•
Minimize handling of the plug-in modules to reduce the possibility of damage due to ESD.
•
Handle modules by the edges.
Never touch any exposed circuitry or contacts.
•
Wear an anti-static wristband or stand on an anti-static mat, or keep one hand touching a
properly grounded pipe or other piece of properly grounded metal when handling modules.
CAUTION
Avoid Electrostatic Discharge (ESD).
Optional modules and accessories are available for the 9950:
a.
Optional Relay Module
b.
Optional Module 1
c.
Optional Module 2
Each item is ordered separately. Modules are
fi
eld-replaceable at any time.
Refer to Module Installation (page 8) and Ordering Information (page 82) for more details.
NOTE:
• The four red Indicator LEDs on the front panel of the 9950 show the status of relays
1, 2, 3, & 4. The LEDs will activate with or without a relay module installed.
• Hysteresis and time delay are adjustable for each relay.
Mfr. Part No.
Code
Description
3-9950.393-1
159 310 268 Relay Module - 4 Mechanical Relays
3-9950.393-2
159 310 269 Relay Module - 2 Mechanical Relays, 2 Solid State Relays
3-9950.393-3
159 310 270 Relay Module - 2 Mechanical Relays , 4 Binary Inputs
The 9950 has a slot for an optional Relay Module for any of the modules listed above.
• Dry-contact relays are electromechanical switches with a moving contact armature. They are
suitable for many general-purpose applications, AC or DC, including AC loads up to 250 V.
• Solid-state relays are electronic switches with no moving parts. They may be used with AC
or DC loads, but have lower current handling capability and voltage ratings than Dry-contact
relays. Solid-state relays will outlast Dry-contact relays in pulsing applications. 30 VDC/ VAC
maximum.
• The four Binary Inputs can detect if an external sensor or switch is open or closed. The switch
state can be used to control the relays in the module. The four binary inputs only control
relay activation and are not considered an input measurement.
For wiring information, refer to the Relay Wiring section, page 8.
Switching active loads (usually inductive) can cause contact arcing suf
fi
cient
to damage the relays.
The RC Filter Kit or “snubber” (part number 3-8050.396) is available as an
accessory to reduce or eliminate these damaging effects. Recommended for
inductive loads greater than 50 VAC (remote relays, solenoids, pumps, etc.)
CAUTION
Keep relay wiring
separate from sensor
and signal wiring to
prevent interference
and damage to the
9950 Transmitter.
CAUTION
Plug-In Modules
Relay Modules
The 3-9950.393-3 module can be set to supply power to the external switch/
sensor. For switches/sensors that require power set the Int/Ext switch to the Int
positions. If the external Switches/Sensors are powered set the Int/Ext switch to
Ext. Important for externally powered switches/sensors ensure the output signal is
within the allowable range for the 3-9950.393-3.
3-9950.393-3
Int / Ext
Switch
EXT
INT
a
b
c
d