GSI127 VM Galvanic Separation Unit

Environmental

General

Temperature

• Operating : 0 to 70°C (32 to 158°F)

• Storage : −40 to 85°C (−40 to 185°F)

Humidity (according to IEC 60068-2-30)

• Operating : 90% max. non-condensing

• Storage : 95% max. non-condensing

Vibration (according to IEC 60068-2-6) : 1 g peak above resonant frequency and 0.15 mm peak below (5 to 35 Hz, 90 minutes/axis)

Shock acceleration (according to IEC 60068-2-27) : 6 g peak (half sine-wave, 11 ms duration, 3 shocks/axis)

Induced signal susceptibility (according to IEC 61000-4-4/5) : Performance criteria B

RF susceptibility (according to IEC 61000-4-3) : Performance criteria A

RF emissions-limits at 1 m (according to IEC 61000-4-3) : <60 dBµV/m (quasi-peak) from 30 to 230 MHz.

<67 dBµV/m (quasi-peak) from 230 to 1000 MHz.

Electrostatic discharge (according to IEC 61000-4-2) : Performance criteria B

Electrical

Power supply (to GSI127)

Input voltage range : 18 to 30 VDC

Current consumption (with nominal 24 VDC supply)

• No load on sensor side : ≤80 mA

• 20 mA load on sensor side : ≤120 mA

Input signal (sensor side)

Supply

• Ordering options B0x : 20 VDC ±1 VDC

• Ordering options B21 : 8 mA ± 0.5 mA

Impedance

• Ordering options B0x : ≤30 Ω

• Ordering options B21 : ≥50 kΩ

Dynamic range

• Ordering options B0x : 0 to 20 mA

• Ordering options B21 : 0 to 20 VDC

Overload protection

• Ordering options B0x : 26 mA

• Ordering options B21 : 22 VDC

Output signal (monitor side)

Output voltage dynamic range (with 10 kΩ load) : 2 to 20 VDC

Output impedance : 20 Ω, protected against short-circuits

Power supply voltage rejection ratio

• 10 Hz to 400 Hz : ≥60 dB

• 400 Hz to 100 kHz : ≥30 dB

Output signal offset drift

with temperature : ≤2 mV/°C

Output signal sensitivity drift with temperature : ≤50 ppm/°C

AC output signal residual noise : ≤3.5 µVRMS/√Hz

Sensitivity

• Ordering options B01 and B02 : 1 V/mA ±1%

• Ordering option B03 : 3.2 V/mA ±1%

• Ordering options B04 and B21 : 1 V/V ±1%

• Ordering options B05 : −1 V/V ±1%

Output offset voltage (zero)

• Ordering option B01 (5 mADC on transmission line) : 7 VDC ±200 mVDC

• Ordering option B02 (12 mADC on transmission line) : 7 VDC ±200 mVDC

• Ordering option B03 (17.5 mADC on transmission line) : 8 VDC ±200 mVDC

• Ordering options B04, B05 and B21 (10 VDC on transmission line) : 10 VDC ±200 mVDC

Bandwidth

• Frequency band with a transfer inside ±0.5 dB : DC to 20 kHz

• Typical −3 dB cut-off frequency : 30 kHz

Linearity : <0.2%

Galvanic separation voltage

• Sensor side and monitor side : 4 kVRMS

• Power supply and output signal : 50 VRMS

Connectors

Screw-terminal connector (top) : 4 contacts for sensor-side signals

Screw-terminal connector (bottom) : 4 contacts for monitor-side signals

Electrical connections

• IEC : 400 V / 0.2 to 2.5 mm2

• UL : 300 V / 10 A / 26 to 12 AWG

Clamping range : 3.31 mm2 (max.), rated connection

Note: The GSI127 features removal screw-terminal connectors that can unplugged from the main body of the housing to simplify installation and mounting.

Physical

Mounting : Suitable for TH 35 DIN rails (according to EN 50022 / IEC 60715).

For example, TH 35-7.5 or TH 35-15.

Electrical connections : Removable screw-terminal connectors (see Connectors on page 6)

Housing

• Material : Polyamide (PA 66 GF 30)

• Colour : Standard versions: Grey.

Ex approved versions: Grey with the electrical connections to the

sensor side indicated by blue.

Weight : 140 g (0.31 lb) approx.

Notes

All dimensions are in mm (in) unless otherwise stated. For standard versions of the GSI127, the housing is completely grey in colour. For Ex approved versions of the GSI127, the housing is grey in colour but with a screw-terminal connector (top) for sensor-side signals (electrical connections) that is blue in colour.

1. Only CExxx piezoelectric accelerometers with a current output signal require a GSI127. For example, the CE134, CE281 and CE31x.

2. An IPCxxx signal conditioner or a VE210 velocity sensor with a current output signal is typically used for signal transmission over longer distances.

Note: For an IPC707 without diagnostics, the nominal current output signal (DC) is 12 mA (→ 7 V). For an IPC707 with diagnostics, the nominal current output signal (DC) is 13 mA (→ 8 V).

3. An IQSxxx signal conditioner with a current output signal is typically used for signal transmission over longer distances.

4. An IPCxxx signal conditioner with a voltage output signal is typically used for signal transmission over shorter distances.

Note: For an IPC707 without diagnostics, the nominal voltage output signal (DC) is 7 V. For an IPC707 with diagnostics, the nominal voltage output signal (DC) is 8 V.

5. An IQSxxx signal conditioner or a VE210 velocity sensor with a voltage output signal is typically used for signal transmission over shorter distances.

6. For use with industry standard IEPE (integrated electronics piezo electric) vibration sensors, that is, constant-current voltage-output sensors such as the CE620 and PV660 (and older CE680, CE110I and PV102 sensors).