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  7. Signet Type 9950 Relay Module

GF Signet Type 9950 Relay Module Owner's manual

  • Hello! I've reviewed the Instruction Sheet for the Georg Fischer Signet Relay Modules, specifically models 3-9950.393-1, 3-9950.393-2, and 3-9950.393-3. This document details the installation, removal, and wiring for the different relay module options. I am ready to answer your questions about these modules and the information provided in the document.
  • What are the three types of relay modules available?
    Can the relay module be installed at any time during system assembly?
    What is important to be ensured before adding or removing relay modules?
    What precautions should be taken to avoid damage during module handling?
Signet 9950 Relay Module Instruction Sheet
3-9950.091 Rev. 2 12/18 English
*3-9900.093*
The plug-in Relay Module may be installed either before
or after the base unit is installed in the customer’s
application. Always disconnect power from the 9950
Before adding or Removing any modules.
Relay Module Installation
The Relay Module plugs in and attaches with one screw.
1. It may be helpful to use a standard screwdriver
to gently pry removable terminals away from the
receptacle on the module.
2. Remove terminals from the module receptacle prior
to installation.
The 9950 o ers three types of relay module options. 3-9950.393-1 contains four mechanical relays. 3-9950.393-2
contains two mechanical relays and two solid state relays. 3-9950.393-3 contains two mechanical relays and four
binary inputs.
English
Relay Module Removal
Note: Ensure power is disconnected from the 9950 and
the Relay Module.
1. Remove the retaining screw from the relay module
and set aside.
2. Insert the pluggable terminal blocks into the relay
modules.
3. Grasp the pluggable terminal blocks and pull
straight back from the 9950 until the module clears
the 9950 base unit.
CAUTION: Switching active loads (most commonly inductive) can cause contact arcing
sufficient 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 e ects.
Avoid Electrostatic Discharge (ESD):
●Minimize handling of module to reduce the possibility of damage due to ESD.
●Handle module 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 properly grounded piece of metal when handling module.
CAUTION:
Exercise care when installing or removing module. Do not bend connecting pins. Align pins and
connectors then push module firmly into place, then attach with screw.
Instruction Sheet
Description
Georg Fischer Signet LLC, 3401 Aero Jet Avenue, El Monte, CA 91731-2882 U.S.A. • Tel. (626) 571-2770 • Fax (626) 573-2057
For Worldwide Sales and Service, visit our website: www.gfsignet.com • Or call (in the U.S.): (800) 854-4090
For the most up-to-date information, please refer to our website at www.gfsignet.com
3-9950.091 Rev. 2 12/18 English © Georg Fischer Signet LLC 2018
3-9950.393-1 and 3-9950.393-2
Relay 1: The alarm is OFF during normal operation, and will
go ON when relay energizes according to 9950
Relay settings.
Relay 4: The valve is ON during normal operation, and will go
OFF when relay energizes according to 9950 Relay
settings.
NO = normally open (closes when energized)
NC = normally closed (opens when energized)
Mechanical Relays Rating: 5A 250 VAC, 5A 30 VDC
Solid State Relays Rating: 50 mA 30V AC/DC
(for 309950.393-2 relay 1 &2)
Relay Module Wiring
3-9950.393-3
The alarm is OFF during normal operation, and will go ON when
the relay energizes according to 9950 Relay settings.
Binary input 4 will be ON when the tank level is above the level
switch, Binary Input 4 will be OFF when the tank level is below the
level switch.
Binary Input Ratings
Maximum input voltage (without damage) 30 VDC
Minimum input voltage (without damage) -5 VDC (no operation below 0 VDC)
Maximum input voltage for signal
“O” (low or "0") 1.5 VDC
Minimum input voltage for signal
“On” (high or "1") 3.0 VDC
Maximum current draw for signal “0” (low) <500 µADC
Minimum current draw for signal “1” (high) 500 µA
Typical current draw for signal “1” (high) 6.0 mA at 30 VDC, 4.8 mA at 24 VDC,
2.4 mA at 12 VDC, 1.0 mA at 5 VDC
• Terminals accept 12 to 24 AWG wire.
• Strip 10 to 12 mm (0.4 to 0.5 in.) of insulation from wire tips and tin bare ends to eliminate fraying.
• Insert wire tip or ferrule completely into the terminal and secure with the screw.
• Do not allow any AC leads that may be connected to the internal relays to come in contact with low voltage wiring.
If an externally powered sensor is connected with the
3-9950.393-3 module, set the power switch to the EXT
position. The module can power external sensors
by switching the power switch to the INT position.
Maximum power that can be drawn from the module is
6mA at 30 VDC.
EXT
Power
Switch
INT
NO 1
N/C 1
COM 1
NO 2
N/C 2
COM 2
RELAY 1
RELAY 2
RELAY 3
RELAY 4
NO 3
N/C 3
COM 3
NO 4
N/C 4
COM 4
AC or DC
power
Valve
Flow
AC or DC
power
ALARM!
3-9950.393-1
N/O 1
N/C 1
COM 1
SW4
SW COM
N/O 2
N/C 2
COM 2
SW3
SW2
SW1
X
RELAY 1
RELAY 2
BINARY INPUT 3
BINARY INPUT 1
No Connection
BINARY INPUT 2
BINARY INPUT 4
AC or DC
power
ALARM!
Level
Level Switch
9950.393 Internal Power
N/O 1
N/C 1
COM 1
SW4
SW COM
N/O 2
N/C 2
COM 2
SW3
SW2
SW1
X
RELAY 1
RELAY 2
BINARY INPUT 3
BINARY INPUT 1
No Connection
BINARY INPUT 2
BINARY INPUT 4
AC or DC
power
ALARM!
Level
Level Switch
DC power +
-
9950.393 External Power
3-9950.393-3 Internal Power
3-9950.393-3 External Power
EXT
INT
Ordering Information
Mfr. Part No. Code Description
3-9950.393-1 159 310 268 Relay Module with 4 Mechanical Relays
3-9950.393-2 159 310 269 Relay Module with 2 Mechanical Relays and 2 Solid State Relays
3-9950.393-3 159 310 270 Relay Module with 2 Mechanical Relays and 4 Binary Inputs
/