SSAC TRU Series Catalog Page
Microcontroller +/-0.1%
Repeat Accuracy
Six Timing Functions are
Switch Selectable
0.1 s ... 1000 m in Six Ranges
Knob Adjustable Time Delay
Universal Input Voltage
19...264 V AC & 19...30 V DC
10 A, SPDT or DPDT Relay
Contacts
Approvals:
Multifunction, MultirangeMultifunction, Multirange
Multifunction, Multirange
Multifunction, MultirangeMultifunction, Multirange
TRU Series
Universal Time Delay Relay
DescriptionDescription
Description
DescriptionDescription
The TRU Series is a multifunction, knob adjustable, Universal Time Delay Relay. It includes six of the most
popular timing functions selected by a slide switch. The time delay is knob adjustable and the time delay range
is switch selectable. The repeat accuracy is + 0.1%. Both function and time range can be selected on the top
face of the unit. In addition to multifunctioning and multiple time ranges, the TRU Series features universal input
voltage; 19 to 264 V AC and 19 to 30 V DC and full 10 A output relay. The TRU Series can directly replace up
to 1000 competitive time delay relay models.
FunctionFunction
OperationOperation
Operation
OperationOperation
A six position slide switch selects Delay on Make,
Interval, Single Shot, Recycling (ON time first), Delay on
Break, and Retriggerable Single Shot. 8 Pin DPDT base
wiring is limited to Delay on Make, Interval, and
Recycling functions. All six functions are available in
the 8 pin SPDT and 11 pin DPDT versions.
ConnectionConnection
Connection
ConnectionConnection
8 Pin DPDT
Delay On Make
Interval
Recycling
Function
FunctionFunction
AccessoriesAccessories
Accessories
AccessoriesAccessories
Panel mount kit
BZ1 BZ1
P/N:
BZ1
BZ1 BZ1
Hold down clips
P/Ns:
PSC8 PSC8
PSC8 (NDS-8)
PSC8 PSC8
PSC11 PSC11
PSC11 (NDS-11)
PSC11 PSC11
11 pin socket
NDS-11 NDS-11
P/N:
NDS-11
NDS-11 NDS-11
Octal
8 pin socket
NDS-8 NDS-8
P/N:
NDS-8
NDS-8 NDS-8
See accessory pages for
specifications.
8 Pin SPDT
Delay On Make
Interval
Single Shot
Recycling (ON Time First)
Delay on Break
Retriggerable Single Shot
11 Pin DPDT
S1 = Initiate Switch
Dashed lines are internal connections.
Relay contacts are isolated.
OrOr
dering Tdering T
Or
dering T
OrOr
dering Tdering T
ableable
able
ableable
VV
oltageoltage
V
oltage
VV
oltageoltage
19 ... 264 V AC; 19 ... 30 V DC
19 ... 264 V AC; 19 ... 30 V DC
19 ... 264 V AC; 19 ... 30 V DC
Base WiringBase Wiring
Base Wiring
Base WiringBase Wiring
8 pin DPDT
8 pin SPDT
11 pin DPDT
V = Voltage S1 = Initiate Switch R = Reset
TD = Time Delay NO = Normally Open Contact
t = Incomplete Time Delay
FunctionsFunctions
Functions
FunctionsFunctions
3
6
6
Part NumberPart Number
Part Number
Part NumberPart Number
TRU1
TRU2
TRU3
TRU02B01 07.29.04
Low Voltage Products & Systems4.6
Multifunction, MultirangeMultifunction, Multirange
Multifunction, Multirange
Multifunction, MultirangeMultifunction, Multirange
TRU Series
Universal Time Delay Relay
Technical Data Technical Data
Technical Data
Technical Data Technical Data
Time DelayTime Delay
Time Delay
Time DelayTime Delay
Type Digital integrated circuitry
Range: Switch Selectable** 0.1 s ... 1000 m in 6 ranges--0.1 ... 10, 1 ... 100 or 10 ... 1000 s;
Adjustm ents Multiplier: 4 position DIP switch selects x0.1, x1, x10, and s or m
LED Indication Two LED's indicate input voltage applied & output relay status
Repeat Accuracy +/-0.1%, or +/-20 ms, whichever is greater
Reset Time ≤ 300 ms
Time Delay vs. Temp. & Voltage +/- 2%
InputInput
Input
InputInput
Voltage--Universal Input Range 19 ... 264 V AC and 19 ... 30 V DC
Line Frequency 50 ... 60 Hz
OutputOutput
Output
OutputOutput
Type Electromechanical relay
Form Isolated SPDT & DPDT
Rati n g 10 A resistive at 120/240 V AC & 28 V DC ; 1/3 hp at 120/240 V AC
Life Mechanical: 1 x 10
ProtectionProtection
Protection
ProtectionProtection
Transient 38 joules
Isolation Voltage ≥ 1500 V RMS input to output
Polarity DC units are reversed polarity protected
MechanicalMechanical
Mechanical
MechanicalMechanical
Mounting Plug-in socket
Package 3.44 x 2.39 x 1.78 in. (87.3 x 60.7 x 45.2 mm)
Termination Octal plug (8 Pin) or magnal plug (11 Pin)
EnvironmentalEnvironmental
Environmental
EnvironmentalEnvironmental
Operating Temperature -20°C ... +65°C
Storage Temperature -30°C ... +85°C
Weight ≅ 6 oz (170 g)
** For CE approved applications, power must be removed when a switch position is changed.
0.1 ... 10, 1 ... 100 or 10 ... 1000 m
Time Setting: Onboard knob adjustment with 1 ... 100 reference dial
7
; Electrical: 1 x 10
6
Mechanical ViewMechanical View
Mechanical View
Mechanical ViewMechanical View
Inches (Millimeters)
TRU02B01 07.29.04
Low Voltage Products & Systems 4.7
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