Faster - more Accurate - Field Programmable

 The Tach*Pak 1 computing speed switch is a single channel instrument. It measures input frequency and converts the resulting quantities to relay closure.

The microcomputer - based Tach*Pak 1 speed switch uses adaptive period averaging which permits a combination of fast response and high accuracy not available in other industrial speed instruments. The instrument functions can easily be programmed in the field or altered at any time using a unique internal switch design.

Typically, a Tach*Pak 1 speed switch is used with magnetic sensors as a signal source. However, it may receive a sine wave or TTL signal from any frequency source. The resulting speed is used for alarm switching. It is superior in applications requiring fast update times and high accuracy for equipment protection.

Features and Advantages

Quicker Response Time -50 millisecond updates above 100 Hz

Higher Level of Accuracy- ± .05% for relay setpoints in operation over temperature ranges.

Field Programmable - Adaptable to various applications and requirements by utilizing a unique internal switch design. No additional calibration equipment is required.

Digital Configuration - Utilizes adaptive period averaging and floating point calculations.

2 Relays - Sealed 6 amp SPDT auto reset or latching.

AC or DC power - Adaptable to either AC or DC power source.

Applications

• Fast response overspeed shutdown
• Petrochemical production applications
• Pump or generator alarm
• Low speed switching
• Start-up, over/under speed switching
• Textile Production applications
• Machine control
• Paper and pulp production
• Turbine speed control
• Food processing
• Conveyor alarms
• Printing industry
• Metal production
• Mining applications
• Test labs
• Generator sets
• Broken or slipping belt drives

Specifications Signal Input
Type: Software selectable for passive or active sensors & terminal block jumper for active sensors.

AC Input ( sine wave):
Input Impedance =2K ohms
Sensitivity @ 1KHz =200 mVrms
Max. Voltage Input =25 Vrms
CMRR =>40 db @ 1KHz, ref. to input amplifier threshold.

Pulse Input (TTL compatible):
Input Impedance =2K ohms
Min. Pulse Width =10µs
Logic 0 =V in < .5V
Logic 1 =V in >1.5V
(+12 VDC @ 50mA supplied for powered sensors)

Frequency Range: Upper limit 30 KHz. Lower limit software selectable 10 Hz to .0625 Hz.

Power Supply
120 Vac ±10%, 50-60 Hz
24 Vdc (23-30 V), std 750 ohm analog
load or (20-30 V) with 600 ohm analog load
15 watts maximum power.

Output
Relay Output: Two SPDT relays, 6 A @ 28 Vdc or 240Vac, 170 W or 1800 VA. Selective relay logic: Energize or deenergize above or below setpoint. Autoreset at setpoint with programmable frequency hysteresis 00.0% to 99.9% or with time delay hysteresis selectable 000 to 999 data acquisitions. Latching ( with remote reset) at setpoint or with time delay selectable 000 to 999 data acquisitions.

Environmental
Temperature: -10°C to 55°C operating,
 -40°C to 80°C storage

Vibration: Designed to meet MIL-810C, Method 514.2, Procedure VIII, and Figure 514.2-6. Curve V (1.5 g's 10-200 HZ)

Shock: Designed to meet MIL-810C, Method 516.2, Procedure I, Figure 516.2-2 for ground equipment (30 g's half sine).

Enclosure Available: NEMA 1 STD, NEMA 4X and Explosion Proof.

Humidity: 90% relative and non-condensing.

Constant Storage: Retained in EAROM and may be altered 1000 or more times.

Electrical References: Circuit common is isolated from AC power, AC ground and case. DC Power is referenced to circuit common.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ordering P/N
Input Power
Enclosure
V77130-11
-12
-41
-42
-71
-72
120 Vac/24 Vdc
240 Vac/24 Vdc
120 Vac/24 Vdc
240 Vac/24 Vdc
120 Vac/24 Vac
240 Vac/24 Vac
Standard NEMA 1
Standard NEMA 1
NEMA 4X
NEMA 4X
Explosion Proof
Explosion Proof

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Connections
TB1
-1 K1 NC *
  -2 K1 COM *  
  -3 K1 NO * * Relays shown de-energized.
Contact rating: 6A max. at 28 Vdc or 6A max. at 240 Vac.
  -4 K2 NC *
 

-5 K2 COM *
  -6 K2 NO *  
  -13 AC Power  
  -14 AC Power  
  -15 Earth  
TB2
 -1 +24 Vdc In
  -2 DC Common  
  -3 Calibrate (when tied to +12V)  
  -4 DC Common  
  -5 +12 Vdc Out (50mA max.)  
  -6 Relay reset (when tied to +12V)  
  -7 Signal +  
  -8 Signal -  
  -9 Shield